peculiarity: The bubble mailer is made of elastic material that can protect the goods from damage during the delivery course. This product is quakeproof, pushproof and waterproof. Its light, easy and save to use, and with good applicability. Its a perfect replacer of the wood box and paper box for the packaging of the mail. technic: There is nothing between the pe bubble film inside and the PE film outside. The bubble film is directly coalesce to the PE film without gluewater, so that insure it can be 100% recycle, and accord with the request of environmentalism. using area: It can be used to post tape, CD, camera lens, film, certificate, IC card, minitype machine accessory and so on goods that need protecting.