Seattle Sports distinctive AquaKnots feature a super comfortable back panel with an air-flow design, gusseted side exterior storage pockets, super reflective patches and a versatile 3-way closure system. Recognizing that Seattle Sports dry backpacks serve a variety of uses from river rafting to cycling, adventure racing to sailing, Seattle Sports engineered the 3-roll closure system to function 3 different ways: - For the rafters & paddlers liking side closure, Seattle Sports offer detachable straps that cinch down to the sides of the bag, which connect to traditional top buckles (otherwise hidden in a clever buckle garage).- For the dry bag purists wanting a traditional clip-together closure, simply expose the top quick-release buckles, roll three times and clip together in the center.- For cyclists and others wanting a quick, clean closure but dont need cinch-down waterproof protection, the side straps clip off and the buckles hide to allow for a simple center-mounted over-the top Velcro-style strap to keep the bag closed.Specifications:- Type: 1200- Height: 18- Width: 14- Depth: 9- Volume: 22 lit.- Capacity: 1200 cu in- Weight: 2.2 lbs