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