Poly mailers are a popular choice for all e-commerce 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. • Adhesive: Synthetic rubber – Hotmelt, ½” minimum +/- 1/4″ • Lip Size: 2” +/- ¼”. • White/Grey Exterior, Black Interior (Interior color of mailer is subject to change). THICKNESS: 35 MIC • Approved by UPS, FedEx, and USPS. • Puncture resistant and tamper/water proof. • Provides excellent protection during shipments. • Used to Ship Lighter Weight items. • 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.