* Strong polythene laminated to 3/16" air bubble * Ultra Light weight--weight 30% less than Kraft bubble mailer and still provides the same protection * Push-proof and moisture-proof * UPS, FedEx, DHL and US Postal APPROVED * Seamless bottom for maximum strength. Smooth side seams * Shipping labels adhere securely to the cover * Extra 1 1/2" long self-seal flap for easy packaging and closure. Guarantees a secure seal every time. Note: Lower 48 U.S. Shipping only. No P.O. box or AFO/FPO box addresses please.