In today’s fast-paced world of online shopping and shipping, a polymailer has become an essential tool for businesses and individuals alike. Whether you’re sending a trendy outfit, a bestselling book, or a carefully crafted accessory, a polymailer can offer a lightweight, durable, and cost-effective packaging solution. 

In this comprehensive guide, we will explore everything you need to know about polymailers, from choosing the right one to reaping their benefits. Let’s dive in!

What is a Polymailer?

Polymailers are specially designed packaging envelopes made from lightweight and waterproof polyethylene material. They provide a secure and protective layer for shipping various items. The polyethylene material used in a polymailer ensures durability, allowing them to withstand the rigors of the shipping process. 

Polymailers are available in different sizes, typically featuring self-sealing adhesive strips for easy closure. Some may even include tear strips or perforations for hassle-free opening by the recipient.

Two men are shown looking at a stack of 4 different shelves, each shown with different size polymailers. One of the individuals has a bubble over his head showing the words: "what size"?

Choosing the Right Polymailers

When selecting the appropriate polymailers for your shipping needs, there are a few factors to consider. First, consider the size of the item you’re shipping. Polymailers come in various dimensions, so choosing the right size is crucial to ensure a proper fit. 

Oversized polymailers may result in excess movement during transit, potentially leading to damage, while undersized ones may compromise the item’s protection.

Additionally, the thickness of the polymailer is essential for safeguarding your shipment. Thicker polymailers offer enhanced durability and resistance against punctures. Consider the nature of the item being shipped and opt for a suitable thickness accordingly.

Benefits of Polymailers

Polymailers offer several advantages for shipping and e-commerce purposes. Firstly, their lightweight nature helps reduce shipping costs significantly, especially when compared to bulkier packaging options. The reduced weight allows for more cost-effective shipping rates, saving both businesses and customers valuable resources.

A man is shown holding a polymailer in his outstretched hand, while he remains under an umbrella that is being held in his other hand. Storm clouds show lightning in the distance and it is raining hard.

Secondly, polymailers are water-resistant. Rain or accidental spills during transit won’t pose a threat to the contents of a properly sealed polymailer. This added protection ensures that your items arrive at their destination in optimal condition, even in damp conditions.

Moreover, polymailers feature self-sealing adhesive strips, eliminating the need for additional packaging materials like tape or glue. This time-saving feature streamlines the packing process and enhances efficiency.

Best Practices for Using Polymailers

To maximize the benefits of polymailers and ensure a successful shipping experience, follow these best practices:

1. Properly pack your items: Place the item inside the polymailer, ensuring it fits snugly. Consider adding additional padding if necessary to prevent any movement during transit.

2. Include a label or packaging slip: Attach a label or include a packaging slip inside the polymailer. This helps with accurate identification and tracking of the shipment, reducing the chances of delays or misplacement.

3. Comply with shipping regulations: Familiarize yourself with any relevant shipping regulations or restrictions, such as size or weight limitations, especially when shipping internationally. Adhering to these guidelines will prevent unnecessary issues or delays.


Polymailers offer a convenient, cost-effective, and protective solution for shipping various items. By choosing the right size and thickness, and following best practices, you can ensure the safe delivery of your packages while reducing shipping costs.

The lightweight and waterproof properties of polymailers make them an ideal choice for protecting items during transit, even in unfavorable weather conditions.

Remember to consider the size and thickness of the polymailers based on the items you’re shipping. A proper fit and adequate thickness will provide the necessary protection. Additionally, take advantage of the self-sealing adhesive strips to streamline the packaging process and save time.

Remember, when it comes to shipping, the choice of packaging matters. With polymailers, you can protect your items, and streamline the shipping process.

Embrace the advantages of polymailers and make your shipping experience smooth and efficient!

If you would like help finding a fulfillment partner/3PL that specializes in HAZMAT reach out to our Fulfillment Consultants and we can place you with a vetted fulfillment partner.


Find A 3PL