100% Waterproof - Lightweight - Weighs only 12 ounces. Roll Top and Double Sling Backpack straps included. A dry bag backpack is a must-have when you need a lightweight, portable, flexible, totally waterproof container to keep your personal gear dry. Our 10 Liter Roll-Top dry bag backpack is the perfect size for carrying all the essentials for day trips, travel, and outdoor activities. This dry bag backpack is designed for convenience and versatility, with two carrying options: backpack straps for easy transport and a d-ring attachment for securing the bag to a boat, kayak, paddleboard, or other gear. The 10 Liter size is ideal for carrying clothes, towels, electronics, small valuables, and more.