PSBM White Expansion Poly Mailers 6700 Pcs 15" x 20" Tamper Evident 3 Mil Self Adhesive Envelopes for Secure Shipping

EXPANSIVE - The poly mailer 15x20 plastic expansive envelopes feature gusseted bottom to allow for thicker items such as books, catalogs and binders. Fits 20 to 40% more than regular mailers. TEAR PROOF - The 3 Mil thick 15x20 white poly mailers have incredible durability when shipping postal, USPS, UPS or FedEx. WATER PROOF - These poly mailers keep your contents safe from water. Being waterproof, you can have peace of mind that your products will not get wet if left out in the elements by the logistics carrier. LIGHTWEIGHT - These mailers are very lightweight and don’t add much to your overall package weight. SELF ADHESIVE - The 15x20 mailers feature a self-sealing peel off strip that allows for super quick closing with no need for tape.