Envelopes Bags Adhesive Postal Self with Tear-Proof and Waterproof Bag Office & Stationery Airplane Wrapping Paper 4.The are self-sealing for easy packing with a -evident, super secure closure. Pressure sensitive adhesive provides a high strength, durable closure that is water and dirt . The Plastic Mailing is thin, durable, and quite flexible, so they're very forgiving of weirdly-shaped contents, and it's easy to in a bit of padding, like newspaper or bubble wrap, for extra protection. Product Quantity: 20 pieces 3.Mailer bags are quite useful for soft items, such like T-shirts, blankets, scarves, or other non breakable items. They are definitely quite durable and the sticky strip sticks very well. 2.The bags are good acceptable thickness for soft-goods, and they are light enough to you some on weight for . The white mailing bags have a peel-off strip that is very sticky that will seal the bag very well, it's quick seal, no licking or water needed. The poly mailer bags are a good strong plastic bag. If you have many orders need to post everyday, these plastic mailing bags ! Material: PE 1.The Mailing Bags used of opaque materials convenient for your privacy with a appearance. Size: 13"x10.24"+1.46" 5.Top-quality poly mailers are tear and puncture . Even though poly mailers don't offer interior cushioning, they are made to withstand the rigors of the process.Mailers are a great choice for their high-strength design that keeps contents secure against , chemicals, tampering, puncturing and tearing.