100PCS Poly Mailers Shipping Bag 7.5×10.5 7.5×12 10×12 11.5×15 13.5×16 15.5×20 Five core strengths 1. Using hot edge sealing technology, edge sealing firm, not easy groove, prevent missing pieces 2. Adopt high quality heat capacity sealing to achieve destructive effect 3. Good sealing, no leakage, waterproof and moisture-proof 4. Anti-static, effectively improve packaging efficiency Details: 【Perfect for packaging non-fragile items】shipping bags are suit for packaging clothing, apparel, jackets, sweaters, shirts, small backpacks, handbags, purses, shoes and books. 【Absolute confidentiality】Tear resistance self sealing envelopes,strong viscosity,improve your package security. These poly mailers were white outer surface, black inner lining, so it looks like light grey color not a true bright white. 【Durable Protection】shipping bags made by six layers membrane,can be streched 3 times longer than normal,keep your product in good condition. 【Waterproof Bags】Waterproof poly mailers keeps your gifts as good as new even if they get left out cold in the rain. 【Save Your Shipping Cost】The poly mailers bags are 4 mil thickness for shipping soft-goods,and they are light enough to safe you some money on weight for shipping. Specification: Material: PE Size: 7.5″x10″/7.5″x12″/10″x12″+1.6″/11.5″x15″/13″x16″+1.6″ Features: Moisture-proof and waterproof, tear resistance, explosion-proof edge No Bubble or Padded Inside Package Included: 100 pack Poly MailersShapeBagMPNDoes Not ApplyBrandUnbrandedColorDark Gray