"WIDE USE - The 10X13 mailer bags plus 1.57” lip are popular for soft items, such as clothing, books, CD's/DVD's and other non fragile items. QUICK EASY PACKING – These poly bags flexible shape allows quick and easy packaging of irregular shaped soft objects. The peel-off strip makes for a quick seal, no licking or water needed to close this bag. WATER PROOF – Protect the contents from water and dust. Making them ideal for storage of items. SAVE ON SHIPPING COST - The poly mailer bags are a light alternative to cardboard packaging so saving you money on mailing costs. PROVIDES CONFIDENTIALITY - The opaque light a grey outer surface and black inner lining ensure the privacy of contents with a professional appearance. TAMPER EVIDENT PACKAGING – These bags are sealed with pressure sensitive adhesive that provides a high strength and a durable closure. Once sealed correctly, the bag has to be ripped to be reopened making tampering visible. DURABLE PROTECTION - Top-quality poly mailers are tear and puncture resistant. While these poly mailers don't offer interior cushioning, and are not recommended for fragile and sharp objects, they are made to withstand the rigors of the shipping process. FAST SHIPPING – ships from U.S.A. "