6" x 9" Light Poly Mailers Self Seal Shipping Mailing Envelopes Bags White Pack of 100 TEAR PROOF - The 2 Mil thick 6x9 white poly mailers have incredible durability when shipping postal, USPS, UPS or FedEx. WATER PROOF - These poly mailers 6x9 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 2 Mil mailing bags 6x9 are very lightweight, which keeps shipping cost at a minimum. SELF ADHESIVE - The 6x9 mailers feature a self-sealing peel off strip that allows for super quick closing with no need for tape. PUNCTURE RESISTANT - The poly mailer 6x9 plastic envelopes are very durable and prevent punctures, rips and tears. The 6x9 poly mailer bags make shipping clothes, t-shirts, blankets, fabrics, odd-shaped items, scarves, accessories, etc very easy.