50 packs, save your time and shipping costThe postal bags come in 50 pieces. Unlike other lightweight bags, they have a nice thickness for shipping soft goods, and they are light enough to save you some weight costs for shipping. If you have a lot of orders to mail every day, these plastic mailing bags are perfect for youSuitable for mailing soft items These mailing bags are quite useful for soft items such as t-shirts, blankets, scarves, or other non-breakable items. The plastic mailing bag is thin, durable, and quite flexible. It is easy to add some padding such as newspaper or bubble wrap to provide extra protection.Strong Self-Sealing AdhesivePostal pouches are self-sealing for easy packaging and have a tamper-proof super-secure closure. The pressure-sensitive adhesive provides a strong, durable closure that is water and stain resistant.Durable ProtectionTop quality postal pouches are tear and puncture resistant. Although poly mailers do not provide internal cushioning, they are designed to withstand the rigors of the shipping process. Poly mailers are usually made of polyethylene, but our mailers are also made of heavy-duty nylon fiber.Provides confidentialityThe outer surface of these postal bags is white and the lining is black, so it looks light gray, not really bright white. The postal pouches are made of opaque material, which is convenient to protect your privacy and has a professional appearance.