Our poly mailer shipping bags are meant to impress! Each poly envelope is 2.3 mils thick, offering you plenty of durability no matter how far the package travels. LaRibbons® and Crafts’ poly mailers are also tear-proof to provide maximum protection and savings on shipping costs. Close and ship your envelopes with the built-in, quick seal adhesive strips, so there's no licking or water needed to give a tamper-evident and super secure closure. These heavy-duty poly mailer shipping bags make the envelopes highly resistant to water, too. There’s also a built-in dark inner lining for complete privacy while your items are in transit. Browse our poly mailers for sale today to discover a solution that’s perfect for shipping small holiday orders.