100X various sizes kraft paper foam mail envelope shipping bag sealed ALL SIZE: #000 5″x7.5″(4″x7″ Inner), #0.0 6″x10″(5″x9″ Inner), # 0 6.5X10 ( 6.5″ x 9″ Inner）, #1 7.5X12 (7.25″ x11″ Inner）, #2 8.5×12 （8.5″ x11″ Inner), #3 8.5X14.5 (8.5″x13.5″ Inner), #4 9.5″X14.5″(9″x13.5″ Inner), #5 10.5″ X16″(10.5″x15″ Inner), #6 13.5″X19″ (12.5″x18″ Inner), #7 15″X20″ (14.25″x19″ Inner), Easy to use: self-sealing, adhesive and easy to be peeledSelf-sealingFully laminated water proof Kraft PaperMailers are plain, no printing or branding outsideLightweight to save on postageStrong seams with fins on two sides and a seamless bottom provides maximum protection.Surface easily accepts ink, stamps, and labels.Approved by USPS, FedEx, UPS, and DHL. Shipping: Item will be shipped within 1 business day after clear payment received. We ship from the US.We also provide tracking number for every order so you don’t worry about where it is. Shipping is always free to the lower 48 states. Please make sure your ship-to address is correct. We do not ship to PO or APO boxes. Please inquire about shipping to Hawaii, Puerto Rico, Alaska, VI as we do not generally ship items to these locations. There may be an extra shipping charge. RETURNS: We offer free returns with a 30 day return policy.