Cushioned mailers offer twice the protection of other bubble mailers with 5/16" high, Bubble Wrap cushioning & strong, coextruded white film on the outside. Sealed Air's Barrier Bubble technology creates a quick-to-pack & cost-saving alternative to cartons. Multilayer, coextruded film provides optimum resistance to moisture, punctures & tears, especially for heavier items. Envelopes are tamper-evident & offer an easy closure. Simply peel away liner & seal. Seamless bottom increases cushioning protection & strength.