The Osprey Dry Sack 3 w/window is ideal for adventures when gear organization is key. Designed to optimize packing as well as protection, this lightweight dry sack has been made with durable ripstop nylon and features a waterproof coating, roll-top closure, and seams to keep your belongings dry. The rectangular shape also ensures efficient packing, and the handy D-ring allows you to hang it up to dry, clip on quick-grab essentials, or attach it to a larger pack. Plus, with the addition of a see-through window, you will be able to find your essentials in no time.