Best Birthday Mailers in 2026

【Upgraded Design Poly Mailers 10x13】The upgraded design of the poly mailers with handle, not only convenient for your customers to carry around, but also saves your packing time and storage space.

【Powerful Self-Sealing and Waterproof】Our mailing bags are not only waterproof to protect the package from the outside environment, but also have a strong adhesive that reduces the chance of product loss.

【Durable Protection & Privacy-Protection】Our heavy-duty shipping envelopes are designed for high strength, with a thickness of 2.95mil per side, and are tear, stretch and puncture resistant. In addition, the inner lining of those mailers poly bags are made of dark material to protect the confidentiality of your shipment.

【Save Your Shipping】Inner Size (Available): 10x13 inches; Thickness: 2.4mil; Quantity: 100 Pieces. Lightweight and easy to ship, these poly mailers are a great alternative to bulky and expensive shipping boxes and can save you a lot on shipping. If you have a lot of orders to mail each day, these poly mailing bags are perfect for you!

【Powerful Self-Sealing and Waterproof】Our shipping envelopes use a pressure sensitive adhesive that won't melt even in hot weather, just a simple peel and fold to seal each package safely and securely. The strong stickiness prevents your items from being lost in transit, and they can deliver your valuables safely to their destination even when used in fog or rain.

【Durable Protection & Privacy-Protection】High-quality poly mailer bags are designed with high strength and are Tear, stretch and puncture resistance to keep the contents safe from moisture, chemicals, tampering, piercing and tearing crack. In addition, the inner lining of the mailers poly bags are made of dark material to protect the confidentiality of your goods.

10x13 POLY MAILERS 100 PACK - The package contains 100 pack 10x13 inch shipping bags. Our top quality shipping envelopes are unpadded, but extremely durable and sturdy for shipping non-fragile items. (Shirts, pants, books, socks, scarves, etc.).

DURABLE & PRIVACY PROTECTION - JinRuiKJ mailing envelopes feature a single-sided 2.4mil strong thick design with high strength and are tear resistant, stretch resistant and puncture resistant. Also, the inner lining of the package bag is made of dark material to protect your privacy.

POWERFUL SELF SEAL & WATERPROOF - Just seal each package securely with a simple peel and fold. The strong stickiness prevents your items from being lost in transit, and even when used in fog or rain, they can safely deliver your valuables to their destination.

【Save Your Shipping】Inner Size (Available): 6x9 inches; Thickness: 2.4mil; Quantity: 100pcs. Lightweight and easy to ship, these colorful plastic mail bags can hold bulky items and are a great alternative to bulky and expensive shipping boxes that can save you a lot of shipping costs. If you have a lot of orders to mail each day, these poly mailing bags are perfect for you!

【Powerful Self-Sealing & Waterproof】Our shipping envelopes use a pressure sensitive adhesive that won't melt even in hot weather, just a simple peel and fold to seal each package safely and securely. The strong stickiness prevents your items from being lost in transit, and they can deliver your valuables safely to their destination even when used in fog or rain.

【Durable Protection & Privacy-Protection】High-quality poly mailer bags are designed with high strength and are Tear, stretch and puncture resistance to keep the contents safe from moisture, chemicals, tampering, piercing and tearing crack. In addition, the inner lining of the mailers poly bags are made of dark material to protect the confidentiality of your goods.

10x13 POLY MAILERS 25 PACK - The package contains 25 pack 10x13 inch shipping bags. Our top quality shipping envelopes are unpadded, but extremely durable and sturdy for shipping non-fragile items. (Shirts, pants, books, socks, scarves, etc.).

DURABLE & PRIVACY PROTECTION - JinRuiKJ mailing envelopes feature a single-sided 2.4mil strong thick design with high strength and are tear resistant, stretch resistant and puncture resistant. Also, the inner lining of the package bag is made of dark material to protect your privacy.

POWERFUL SELF SEAL & WATERPROOF - Just seal each package securely with a simple peel and fold. The strong stickiness prevents your items from being lost in transit, and even when used in fog or rain, they can safely deliver your valuables to their destination.

Planet Friendly Packaging - Our 100% recyclable eco-friendly poly mailers are mindfully made using d2w smart plastic technology - a sustainable packaging alternative to help tackle the ever-growing plastic waste problem. Speak up for environmental friendliness with custom mailers!

Convenient and Economical - 10x13 inches mailers poly bags are an affordable alternative to standard packaging, and they will help keep your customer's items safe while reducing shipping costs. Poly mailer bags are great for shipping light and less fragile products, such as clothing, apparel and accessories, shirts, shoes, jeans, books, cosmetics,supplements and much more.

Strong & Durable Construction - Our polymailers are made to be incredibly durable to resist punctures, tears, and moisture. They are waterproof and tearproof. The explosion-proof edge and strong viscosity will help protect your items from losing.