#000 4x8" KRAFT BUBBLE MAILER PADDED ENVELOPES-500 qty Each has "finned" edges for additional protection and maximum durability. Exclusive Duraliner technology provides the best cushioning and a high slip for easier product insertion and extraction. Each mailer is self sealing and 100% recycleable. No printing on the address label side where ink, self stick stamps and labels adhere easily and securely. Each mailer has inside dimensions of 4.00" x 7.00" and weighs just 0.3 ounces.