Poly Mailer Bags - 100 Pack 10x13 ShipQuick Envelope Mailers With Adhesive Strip and Safety Regulation Choking Warning- Water and Weather Resistant Envelope Bags (10"x13" 100 Pack) Heavy-Duty Weather, Tear, and Puncture Resistant - wont bust or break open, even if over-packed. Safety Compliant - Each bag comes pre-printed with the necessary Child Choking/Suffocation Warning, so you wont have print/purchase your own labels. This has EXACTLY what you need in order to remain in compliance with safety standards. Flexible & Lightweight - saves you from added shipping costs! Quick-Seal adhesive strip - Easily close and ship your envelopes, no licking or water needed Cost-efficient mailers - perfect for shipping a wide variety of non-fragile items