Top Quality Poly Bubble Mailers: Made in USA with premium materials for reliable shipping protection. Easy to Use Shipping Solution: Poly bubble mailers help make shipping your products, gifts, toys, cards, files, and more very easy with lightweight construction for convenient mailing Versatile Size Options: Comes in various sizes and case quantities, ranging from small to large sizes for offices, business, schools, at home projects, and more Dimensions & Pack Size: 8.5" x 12" pack of 50 mailers with outer dimensions of 8.5" x 12" and inner dimensions of 8.25" x 11.75" Convenient Features: Self sealing tear strips for easy closure, water proof outside to keep from water damage during transit, smooth texture, easy to apply shipping labels, and easy to write on Durable Construction: Made with polyethylene film, interior lined wall covered with protruding air-filled bubbles that provide cushioning for fragile items and extra protection with double wall co-extruded design for durable support Protective Bubble Lining: Features 3/16" bubble cushioning on the inner layer that helps keep your items secure during transit and protects against impacts and damage UOFFICE Pack of 50 Poly Bubble Mailers 8.5"x12" #2- Discover the versatility and cost-saving benefits of Poly Bubble Mailers, the ideal packaging solution for a wide range of small to medium-sized items. These larger Bubble Mailers combine the protective qualities of bubble cushioning with the durability and water resistance of a polyethylene outer layer. This makes them suitable for shipping products such as books, clothing, accessories, craft supplies, and small hardware.