Bubble-lined mailers provide excellent cushioning protection for semi-fragile items. Fully laminated Kraft & air cellular construction make it puncture-resistant & water-resistant. Printable double Kraft material is used on the outside of each mailer. Self-adhesive flap closure extends the entire width of the envelope & requires no moistening to seal. Seamless bottom affords additional cushioning protection along with greater overall strength & safety. Mailers are made from 100 percent recycled paper with 10 percent post-consumer content. Bubble cushioning contains 10 percent recycled plastics.