Poly Mailers:Poly mailers are a popular choice for all ecommerce businesses. Equipped with an adhesive strip for sealing. Packaging is both simple and fast, providing a great way to ship your goods. Not only are they quick and efficient, they are also water resistant and tamper evident, allowing you to ship your items confidently. They are extremely cheap, lightweight, and take up less space than boxes. They're perfect for non-fragile items.3 Mil Poly Mailer: These 3 Mil poly mailers are the perfect solution for shipping. Our strongest mailer, these provide the most protection from punctures and tears when shipping heavy or sharp objects. With water and tamper resistance, and a self-sealing lip with a synthetic rubber adhesive, these provide a safe and secure way to ship your packages. These mailers are also lightweight which will result in savings during the shipping. The white/grey exterior helps ink, stamps and labels stand out for visibility. Whether shipping clothing, books, or pretty much anything that can fit in the (size) bag, you can ship confidently using these mailers.Item Specifications:● Adhesive: Synthetic rubber – Hotmelt, ½” minimum +/- 1/8”● Lip Size: 1.5” +/- ¼”● Paper Liner: Clear with antistat● Opacity: Business card inside the mailer should not be visible under UV light● Usable Dimensions: 12” x 15.5”● White/Grey Exterior, Black Interior (Interior color of mailer is subject to change)● 3-millimeter thickness (+/- 5%)● Used to ship Heavier Items● Approved by UPS, FedEx, and USPS● Puncture resistant and tamper/water proof● Provides excellent protection during shipments● High adhesive seal strip-packages are tightly secured after 3-5 minutes sealed● Inks, Stamps, Labels adheres easily● Available in single or bulk case quantities.DISCLAIMER: ALL PICTURES SHOWN ARE FOR ILLUSTRATION PURPOSE ONLY. ACTUAL PRODUCT MAY VARY DUE TO PRODUCT ENHANCEMENT.