Check the listing for details. Owlpack SelfSeal Poly Mailer Security Shipping Plastic Envelopes 2.5 Mil 6 x 9. Condition: New. Listed at 11.50 USD. o White, 2.5 Mil thick, adhesive seal mailer bags o Black interior ensures contents are not visible from the outside o Meets FDA requirements for food use o Different quantities available o Great for mailing CDs, software and other square jewel cases, larger phone cases, electronic accessories Product Description Owlpack Self Seal White Security Plastic Mailer Bags 2.5 Mil are the convenient, quality mailers with the features you need. These white plastic mailers are constructed of sturdy, 2.5 Mil thick LDPE plastic and feature an adhesive, peel and stick closure that’s fast and easy to use. Black interior coating ensures contents are not visible from the outside. Perfect for mailing valuable or sensitive items. Sizes shown reflect dimensions of bag when sealed.