15 x 20 x 4'' Expansion Poly Mailers, 100PK

Strong, polyethylene mailers protect products from moisture during shipping. Features a gusseted bottom to allow for thicker items such as binders, books and catalogs; Puncture, moisture, tamper and tear-resistant; High strength seams will keep contents intact even if over packed; The outer surface of the mailer is white and the inner lining is silver; Labels, ink and stamps adhere well; Self-seal closure with a double perforation tear strip for easy opening. This product is equivalent to part number: S-13609. Sold in a quantity of 100 per case.