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Custom poly mailers come in a wide range of sizes, materials, and styles, making them a fantastic choice for shipping various products. Moreover, they can elevate your brand’s identity while also potentially reducing shipping costs by up to 60%.
– Easy packing
– Lightweight
– Space saving
– Durable
– Penetration resistant
– Water resistant
– Customizable for branding

What Custom Poly Mailers Are

Items Best Suited for Poly Mailers

Custom poly mailers are adaptable packaging solutions that work well for various items. They provide security, protection, and chances for branding. Here’s a list of items suitable for shipping in custom poly mailers.









Fabrics And Yarns


Books And Magazines


Phone Cases






Arts And Prints

Hot Selling Types Of Custom Poly Mailers

Find the right poly mailer for your specific shipping and branding needs.

Regular Poly Mailer

- Standard option
- Self-sealing
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Pre-open Rolled Poly Mailer

- Space saving
- For packing station or automated packing equipment Get An Instant Quote>>


Poly Mailer With Handle

- Practical handle for easy holding
- Creative design
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Returnable Poly Mailer

- Double adhesive strip
- Easy-tear line
- Convenient for a second using Get An Instant Quote>>


Clearview Poly Mailer

- Transparent front
- Easy visibility for effective display Get An Instant Quote>>


Recycled Poly Mailer

- Recycled materials
- Reducing plastic pollution
- Reducing energy consumption Get An Instant Quote>>


Wicket Poly Mailer

- Wicket on the top
- For bulk purchase
- Faster packing Get An Instant Quote>>


Biodegradable / Compostable Poly Mailer

- Biodegradable/compostable materials
- Making an effort to environmental sustainability
- May become vulnerable over time Get An Instant Quote>>

Common Sizes Of Custom Poly Mailers

6 x 9 inches
7.5 x 10.5 inches
9 x 12 inches
10 x 13 inches
12 x 15.5 inches
14.5 x 19 inches
Suitable products
Two or three pairs of socks, one phone case, three decks of cards, cosmetics like lipsticks, and an eye shadow palette, or tiny jewelry boxes
Small electronics, larger jewelry boxes, one hat, or two T-shirts for babies
One or two folded T-shirts
One pair of sneakers for children that are packed in the box, one pair of jeans, one or two pairs of shorts; three T-shirts, a long dress, or journals
Thick clothes like one sweater, one wool skirt, or four or five large T-shirts
One jacket about 4 inches thick, two pieces of hoodies, a four-piece suit, one pair of adult shoes that are packed in the box, or one set of sheets

Eco-Friendliness Of Custom Poly Mailers

Package N' Go poly mailers, our packaging solution, is designed with sustainability in mind. These mailers are not only recyclable but also can be customized to incorporate a percentage of recycled materials, tailored to your specific requirements. Additionally, we offer biodegradable and compostable poly mailer options to meet your eco-conscious needs. Utilizing eco-friendly poly mailers is not only crucial for companies dedicated to sustainability impact but also for building strong brand awareness and loyalty among consumers.


Recycled Poly Mailers

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Biodegradable Poly Mailers

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Compostable Poly Mailers

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Materials Of Custom Poly Mailers

LDPE poly mailers are flexible and stretchy, great for shipping soft items like clothing. They have a lower density, making them softer, and a lower melting point. They’re non-toxic, tear-resistant, and transparent. [Click here to learn more.]
HDPE poly mailers are sturdy and puncture-resistant, perfect for protecting items like electronics. HDPE has higher density, making it tougher with a higher melting point, but less flexible.[Click here to learn more.]
Knowledge You Want To Know About The Release Liners
There are three primary types of release liners for poly mailers: paper release liners, plastic release liners, and aluminum foil release liners, each offering distinct features tailored to your specific requirements..
Paper Release Liner: Paper release liners are eco-friendly and biodegradable, making them an environmentally responsible choice. They offer good printability, allowing easy customization with text and graphics, while remaining cost-effective.
Plastic Release Liner: Plastic release liners are known for their durability and versatility. They can be made from various plastics like polyethylene or polypropylene, making them suitable for diverse applications. However, their pricing varies depending on material type, thickness, and size.
Aluminum Foil Release Liner: Aluminum foil release liners combine a luxurious appearance with high-temperature resistance. They are visually appealing but tend to be more expensive compared to paper and some plastic options, making them suitable for specialized or premium applications.

How Custom Poly Mailers Are Made

Film Blowing: Film blowing is a plastic processing method where plastic particles are melted and inflated into a tubular film using high-pressure air. This film is then cooled and finalized. The film-blowing machine is critical for producing high-quality film packaging with excellent barrier properties and freshness preservation.
Printing: Poly mailer bags undergo high-quality printing using a specialized gravure press. This involves transferring the design onto a copper plate, ensuring precise ink application. The inked plate is then pressed onto the co-extruded film for printing.
Deflation and Heat Seal: The final step in creating poly mailer bags is bag cutting and bag making. The co-extruded film is laminated with an adhesive strip and then precisely cut and heat-sealed by the bag-making machine to create the poly mailer envelopes. The choice of hot melt adhesive is crucial for ensuring the bags’ strength and anti-counterfeiting features.

What Design File Shoule Be Prepared

File Format: Preferred formats: AI (Adobe Illustrator) or PDF for high-resolution artwork.
Resolution:Minimum of 300 DPI (dots per inch) to ensure sharp and clear prints.
Color Mode:Use CMYK color mode, which is best for four-color process printing. Avoid RGB mode to prevent color printing issues.
Fonts:Convert all text to outlines or include the specific fonts used to avoid font replacement issues.
Graphic Elements:All logos, photos, and icons should be high quality and correctly positioned. Provide necessary links and avoid using copyrighted images without permission.

The Process Flow & Duration Estimation


Step 1: Free Design (1 day)

Work with our team to create a unique design that aligns with your brand and vision.


Step 4: Production (5-15 days)

During production, we pay attention to every detail and ensure high-standard products within the specified timeframe.


Step 2: Free Sampling (3-5 days)

Receive a physical sample of the custom poly mailer for evaluation, allowing you to assess its appearance, functionality, and quality.


Step 5: Quality Inspection (1-2 days)

Our quality control team meticulously inspects each poly mailer to ensure they meet our stringent standards.


Step 3: Payment

Submit the payment using your preferred payment method. We offer a range of flexible payment options to accommodate your needs.


Step 6: Delivery (3-30 days)

We securely package and ship your custom poly mailers to your designated location, utilizing diverse transportation options tailored to your needs.

How To Store Custom Poly Mailers

Keep Them Dry:
Ensure that poly mailers are stored in a dry environment, away from moisture and humidity. Humidity can make the bags sticky and difficult to handle, and it may even lead to mold growth.
Avoid Direct Sunlight:
Don’t expose poly mailers to direct sunlight, as UV rays can make the bags brittle and impact their strength and durability.
Control Temperature:
Aim to store your poly mailers in a controlled temperature environment. Extreme temperatures can have adverse effects on the polyethylene material.
Avoid Heavy Pressure:
Don’t place heavy objects on top of the poly mailers, as this can cause them to break or deform.
Stay Clear of Chemicals:
Prevent poly mailers from coming into contact with chemicals such as solvents, acids, or alkalis to avoid chemical reactions or damage to the material.

Factors That Influence Prices Of Custom Poly Mailers

Material Quality:
The quality of materials used impacts cost. Higher quality may mean higher costs but improved durability and features.
Size and Dimensions:
Larger or custom-sized mailers require more material and may have complex manufacturing, leading to higher costs.
Thickness and Strength:
Thicker and stronger mailers protect better but can be costlier due to increased material usage.
Quantity and Volume:
Bulk orders often offer lower per-unit prices due to economies of scale.
Custom printing, logos, or designs add costs due to printing and setup expenses.

How Do We Do Quality Inspection For Your Custom Poly Mailers

Quality inspection for custom poly mailers is crucial, and we will rigorously assess them based on the specified criteria to ensure they meet our high standards.



Ink Adhesion




Film Stretching Force


Film Color


Edge Sealing Firmness


Ink Saturation


Adhesive Sealer Firmness

The Basic Knowledge About Custom Poly Mailers

We regularly publish informative blog posts covering a wide range of topics related to custom poly mailers, empowering you with the knowledge needed to make informed decisions.
Everything You Need to Know About Gravure Printing

Table of Contents 1. Introduction to the Process Gravure printing is a direct printing method where ink from the recessed cells of the gravure cylinder is transferred directly onto the substrate. In gravure printing, the image areas of the printing plate are below the surface of the plate, with varying depths corresponding to the tonal variations of the image. The non-image areas are raised and on the same plane. During printing, ink fills the recessed cells, excess ink on the surface of the plate is wiped away by a doctor blade, and the plate is then pressed onto the substrate with sufficient pressure to transfer the ink from the cells onto the substrate, completing the printing process. 2. Process Flow The main steps of the gravure printing process include: 2.1 Design and Plate Making Designing and creating the gravure printing plate according to the requirements of the print job. The plate must be precise, with clear details to accurately transfer the image. 2.2 Plate Making Transferring the designed image onto the plate. Common methods include chemical etching, photomechanical processes, and mechanical engraving. The completed plate is inspected and refined to ensure quality and accuracy. 2.3 Printing Preparation This includes adjusting the plate, setting up the printing press, mixing inks, and selecting the printing substrate, ensuring the smooth operation of the press. 2.4 Printing Placing the prepared plate on the printing press,…

Detailed Explanation of Embossing and Debossing Techniques

Table of Contents 1. Introduction to the Technique Embossing and debossing, also known as relief printing or raised printing, are post-press techniques that create a three-dimensional effect on paper or other substrates. By using pre-made embossing dies and applying pressure, the surface of the substrate is shaped into raised or recessed designs or text. This technique highlights specific areas of a printed piece, making them more prominent and visually appealing. 2. Principle of the Technique Plate Making: First, create the embossing (raised) and debossing (recessed) dies based on the design. This is usually done through engraving, which can involve woodcuts, copper engravings, or steel engravings. The engraving process distinguishes the primary from the secondary layers in the design, using depth to emphasize the main elements and adding details for secondary elements. Embossing and Debossing Process: During printing, place the substrate between the embossing and debossing dies and apply significant pressure. Under pressure, the substrate undergoes plastic deformation, creating raised or recessed designs and text. This process does not use ink but relies on the pressure from the printing machine. Visual Effects: Embossing and debossing techniques create noticeable relief effects, enhancing the three-dimensional feel and artistic appeal of the printed piece. The tactile differences provided by the raised or recessed designs add richness to the visual experience. Additionally, these techniques can produce various shapes and patterns, capturing…

Die-Cutting Process for Paper Products

Table of Contents 1. Process Overview The die-cutting process is a critical technique in paper product processing. It utilizes molds to cut paper, cardboard, and other materials into specific shapes and sizes. Currently, the main die-cutting processes are flat-bed, rotary, and cylindrical die-cutting. Among these, flat-bed and cylindrical die-cutting are the most common. 1.1 Flat-Bed Die-Cutting Flat-bed die-cutting can be divided into vertical semi-automatic die-cutting machines and horizontal automatic die-cutting machines. Vertical Semi-Automatic Die-Cutting Machine: Known for its simple structure, easy maintenance, and ease of operation, this machine is widely used in smaller production facilities. However, it has high labor intensity and low production efficiency, typically operating at 20-30 cycles per minute, making it suitable for small batch production. Horizontal Automatic Die-Cutting Machine: This machine is safe and reliable with a high degree of automation and production efficiency. Due to its small platen stroke, manual loading and unloading of cardboard is challenging, so it usually includes an automatic feeding system. The overall structure is similar to a sheet-fed offset press, consisting of an automatic paper feeding system, die-cutting section, paper output section, and electrical control and mechanical transmission components, sometimes equipped with an automatic waste removal system. It is well-suited for micro-corrugated cartons and paper box forming. 1.2 Rotary Die-Cutting Rotary die-cutting replaces the platen with a cylindrical pressure roller, with the cutting die positioned below the roller.…

Detailed Explanation of the Lamination Process

Table of Contents Introduction to the Process   Principle   Lamination is a surface finishing process in printing, also known as post-press coating, post-press lamination, or post-press film application. It involves covering the surface of printed products with a transparent plastic film (primarily BOPP and PET materials) of 0.012 to 0.020 mm thickness using a laminating machine, forming a paper-plastic composite product through adhesion.   Advantages Enhanced Durability: Lamination enhances the durability of packaging by adding a protective film to paper boxes and gift boxes, effectively preventing scratches, stains, and other damage. This extends the packaging's lifespan and ensures products remain undamaged during transport and storage.   Improved Visual Appeal: Lamination can significantly enhance the visual appeal of packaging. By choosing transparent or colored laminating materials, the packaging can appear more vibrant and attractive, capturing consumer attention and increasing product appeal.   Additional Design Space: Lamination offers extra design possibilities. Using materials with special effects or textures, such as matte or glossy finishes, can add unique and sophisticated elements to the packaging, enhancing the product's perceived quality and value.   Working Methods and Process   The lamination process can be divided into wet lamination and pre-coating lamination based on the materials and equipment used. Wet lamination involves using a freshly applied adhesive, which can be solvent-based or emulsion-based. Pre-coating lamination…

Everything You Need to Know About Biodegradable Poly Mailers

Table of Contents Chapter 1: Understanding biodegradable poly mailers   1.1 What is a biodegradable poly mailer?   A biodegradable poly mailer is an eco-friendly packaging option made from biodegradable materials. It can decompose over time through various techniques like photodegradation, oxidation, and biological degradation, thereby avoiding environmental pollution. These mailers have good transparency, heat resistance, high tensile strength, impact resistance, rigidity, and toughness, with low heat shrinkage rates.   1.2 What are biodegradable poly mailers made of?   The main raw materials for biodegradable poly mailers include natural high molecular weight materials and biodegradable polymers. Specifically, there are several types:   Starch-based plastics: These are made by blending starch and plastics through a specific process. The primary materials are starch and polyethylene, along with certain degradation agents and plasticizers.     Polylactic acid (PLA): This is a biodegradable polyester plastic made from lactic acid through polymerization.   Cellulose: Another natural high molecular weight material, cellulose can also be used to make biodegradable plastic mailers.     Aliphatic polyesters, polylactic acid, polyvinyl alcohol: These are produced from microbial fermentation or synthetic biodegradable polymers.   PBS (polybutylene succinate): This material can be produced using petrochemical raw materials or through fermentation of renewable crops like starch, cellulose, glucose, etc.     These raw materials are extracted from natural plant fibers or biomass…

The Ultimate Guide to Shipping Box

Table of Contents Chapter 1: Understanding shipping boxes   1.1 What is a shipping box?   The shipping box has a straightforward design, formed by folding and creasing a single piece of cardboard. It includes four three-dimensional panels: two long side panels and two short side panels, which can be folded and secured with adhesive tape or other methods. Usually, it also features a lid and a bottom that match its dimensions, enabling complete closure. Shipping boxes are used for packaging and transporting various products, known for their convenience, cost-effectiveness, and efficiency, making them widely used in the logistics industry.   1.2 What are the materials of shipping boxes?   1.2.1 Corrugated cardboard   Corrugated cardboard is one of the primary materials used in making paper boxes. It consists of one or two layers of corrugated cardboard and two or three layers of flat paper. There are various types of corrugated cardboard, classified based on the flute type as A, B, C, E, N, F, and N.     We can refer to the grammage of corrugated cardboard in this form:     1.2.2 Boxboard paper   Boxboard paper is the surface layer paperboard used in corrugated cardboard boxes, requiring high strength and good toughness, made from sulphate pulp. Depending on the quality and usage requirements of the boxes, boxboard…

Everything You Need to Know About Glassine Bags

Table of Contents Chapter 1: Understanding glassine bags   1.1 What is a glassine bag?   Glassine bags are made from glassine paper. Glassine paper is a high-quality specialty paper material known for its dense and uniform texture, high internal strength, good translucency, and other characteristics. It also has functions such as high temperature resistance, moisture resistance, and oil resistance, making it widely used in packaging for industries such as food, clothing, electronics, home decor, and gifts.   1.2 What are the materials of glassine bags?   The raw materials used in manufacturing glassine bags consist mainly of the following components:       Furthermore, the coating materials for glassine paper include:     1.3 What are the uses of glassine bags?   Glassine bags are a versatile packaging solution widely used across various industries and product types. Here are some specific use cases:   Clothing packaging:   Glassine paper packaging bags are particularly suitable for clothing packaging due to their high temperature resistance, moisture resistance, and oil resistance. They can effectively protect clothing from environmental factors.   Environmental packaging:   As a material for eco-friendly, renewable, and plastic-free paper bags, glassine paper bags help reduce plastic pollution and serve as an "environmentally friendly attire" for numerous products.   1.4 Common sizes       1.5 What are the benefits…

Everything You Need to Know About Zip Lock Bags

Table of Contents Chapter 1: Understanding zip lock bags   1.1 What is a zip lock bag?   A zip lock bag is a type of plastic packaging widely used for clothing, shoes, bags, food, cosmetics, medicines, and other products. Its main feature is the zip-lock closure design, which is convenient, quick, and provides good transparency. It can offer a beautiful, clean, and hygienic protection for the goods.   1.2  What are the materials of zip lock bags?   1.2.1 Polyethylene (PE)   PE is a type of plastic material with excellent properties, suitable for making high-pressure plastic bags, tote bags, and more.   Features: PE is soft, non-toxic, easy to dye, impact-resistant (-40°C to 90°C), resistant to moisture, and has good chemical resistance.   The molecular weight of polyethylene depends on its type, with common types including Low-Density Polyethylene (LDPE) and High-Density Polyethylene (HDPE). LDPE typically has a molecular weight between 1000 and 3000, offering good impact resistance and heat resistance, often used in making plastic bags. HDPE typically has a molecular weight between 3000 and 9000, providing good impact resistance, corrosion resistance, and heat resistance.   1.2.2 Polypropylene (PP)   Polypropylene (PP) is a versatile plastic material widely used for manufacturing high-transparency plastic films, self-sealing bags, flat bags, and vacuum-formed boxes. It offers several advantages, including easy colorability,…

Everything You Need to Know About Honeycomb Paper Bags

Table of Contents Chapter 1: Understanding honeycomb paper bags   1.1 What is a honeycomb paper bag?   A honeycomb paper bag is made by bonding three layers: kraft paper, honeycomb paper, and kraft paper again, with honeycomb paper as the primary material. With the growing environmental consciousness, honeycomb paper bags are emerging as a new star in the express delivery and logistics industry, gradually replacing many plastic products due to their eco-friendly and biodegradable nature. These bags feature a hexagonal cell structure similar to a honeycomb, providing lightweight, durable, and eco-friendly packaging solutions for industries such as shipping, logistics, and e-commerce.   1.2 What are the materials of honeycomb paper bags?   1.2.1 Honeycomb paper     Honeycomb paper, also known as honeycomb packaging paper or honeycomb kraft paper, is a type of cushioning protective material made by die-cutting kraft paper into a mesh-like structure that can be expanded into a honeycomb pattern. It is used as an eco-friendly alternative to plastic-based materials like bubble wrap or foam in protective packaging, suitable for shipping, cross-border e-commerce, courier transport, and product packaging, providing strong protection for goods. The paper is initially flat after die-cutting from kraft paper but expands into a honeycomb pattern when used or made into bags.   Honeycomb paper must be made from the long fibers of…

The Ultimate Guide to Rigid Box

Table of Contents Chapter 1: Understanding rigid boxes 1.1 What is a rigid box? A rigid box is a type of high-end packaging known for its exquisite appearance, refined craftsmanship, and intricate structure. It is named for the multiple pasting processes involved in its production. Essentially, pasting involves adhering the box's surface paper to an industrial board. Rigid boxes are renowned for their robust and durable construction, maintaining their shape and integrity even under pressure. They find wide application across various industries, including luxury goods, cosmetics, electronics, jewelry, and gift packaging. These boxes are favored for their ability to convey quality and elegance, making them an ideal choice for high-end products. 1.2 What are the materials of rigid boxes? 1.2.1 Gray board paper Gray board paper, also known as greyboard, is a type of paperboard made from recycled waste paper and is considered an environmentally friendly packaging material. It comes in three main types: single gray, double gray, and full gray. Single gray board has one side that is gray; full gray board is uniformly gray on both sides, including the core; double gray board has gray on both sides, with a yellowish core visible from the cut edge. While double gray and full gray may look similar externally, full gray board tends to have better rigidity. Double gray board is more cost-effective, hence its widespread…

What People Say About Our Custom Poly Mailers

“I’m amazed by the affordability of these custom poly mailers! They offer top-notch quality without breaking the bank. A cost-effective packaging solution that doesn’t compromise on excellence.”
“Impressed by the exceptional quality of these custom poly mailers. Sturdy, durable, and well-made. My items arrived in perfect condition, thanks to the reliable protection they provide.”
“The lightning-fast delivery of my custom poly mailers exceeded my expectations. I needed them urgently, and they arrived right on time. Efficient service that saved the day!”
“These custom poly mailers allowed me to showcase my brand perfectly. The level of customization is outstanding, making my packages stand out and leaving a lasting impression on my customers.”

The Common Pitfalls When Purchasing

Poor Quality Material: Opting for low-quality polyethylene material can result in mailers that easily tear or puncture during transit. This can damage your products and lead to a negative customer experience.

How to Avoid It: It’s crucial to partner with trustworthy suppliers known for utilizing top-notch materials. Before committing to a bulk order, request samples.

Inadequate Sizing: Choosing the wrong size for your custom poly mailers can lead to issues like products not fitting properly, excessive empty space, or difficulty sealing the mailers.

How to Avoid It: Take accurate measurements of your products to determine the appropriate mailer size. Test the fit before placing a large order to ensure a snug fit without excessive empty space.

Ignoring Environmental Impact: Neglecting the environmental impact of your packaging choices can be a pitfall in today's eco-conscious market.

How to Avoid It: Research and select environmentally friendly options for your custom poly mailers. Look for recyclable, compostable, or biodegradable materials that align with your brand’s eco-conscious values and appeal to environmentally conscious customers.

Overlooking Regulations: Depending on your location and industry, there might be regulations governing packaging materials.

How to Avoid It: Research packaging regulations in your industry and region. Ensure that your custom poly mailers comply with any relevant guidelines to avoid legal issues and potential fines.

Overcomplicating Design: While a unique design is great, overly complex designs can increase costs and may not necessarily enhance your branding or customer experience.

How to Avoid It: Keep your design clean, recognizable, and aligned with your brand identity. Avoid overly intricate designs that could increase production costs or hinder legibility.

A Brief Self-Nomination, Why Choose Package N’ Go?

With an innovative China-based supply chain, Package N’ Go is an American company with a strong global presence. With two decades of dedicated service, we’ve become a prominent industry leader, driven by our commitment to customized packaging solutions.
Our advantages:
Factory directed
Eco-friendly packaging
Tailored services for unique requirements
Lowest MOQ in the whole industry
Unbeatable prices
Fast turnaround
World-class quality control
24-hour prompt response
Various transportation options
Flexible payment options

What After Sales Service Do We Provide?

01 /

Fast and Efficient Order Processing: Our streamlined order processing system ensures that your orders are handled promptly and efficiently, so you can meet your deadlines with confidence.

02 /

Quality Assurance: We stand by the quality of our custom poly mailers. If you encounter any issues with your order, our quality assurance team will work swiftly to address and resolve them, ensuring that you receive the high-quality products you expect.

03 /

Returns and Refunds: In the rare event that you are not completely satisfied with your order, our customer-friendly returns and refunds policy provides a hassle-free process for resolving any issues to your satisfaction.

04 /

Order Tracking and Updates: Stay informed about the status of your order. We provide real-time tracking and regular updates so you always know where your custom poly mailers are in the production and delivery process.

The FAQs About Custom Poly Mailers

Our minimum order quantity for custom poly mailers is 5000.
Delivery timelines may vary based on your location and the quantity of your order.
Yes, we provide free samples so you can assess the design, quality, and functionality before committing to a bulk order.
Yes, we have bulk order discounts available. Feel free to inquire with our sales team for more information
Absolutely, all of our poly mailers are recyclable. We also offer recycled poly mailers, biodegradable poly mailers and compostable poly mailers, contributing to sustainable packaging practices.
Our poly mailers are printed using a specialized gravure press for high-quality outcomes.
Preferable file formats for design artwork often include high-resolution options like AI or PDF.
Our experts can guide you in selecting the appropriate poly mailer size based on your product dimensions.

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