The Interval is a problem solving wet-dry backpack. Conceived of as a surf pack with a lower expanding wetsuit compartment and an upper compartment for all your dry goods. The front organizer pocket stores wax, surf fins, and other accessories in an easy to clean tarp-lined design. Details: Waterproof wetsuit pocket, non-padded laptop sleeve, fits most 15'' laptops, tarp lined surf wax pocket, fin organizer sleeves, organizer pocket, fleece lined sunglass pocket, breathable shoulder straps, adjustable sternum strap, limited lifetime warranty. If your bag gets dirty, Dakine recommend hand washing with mild soap (like Nikwax Tech Wash), cold water and a soft bristle brush. If hand washing is not going to do the trick, use a front loader washing machine. To ensure your backpack doesn't get tangled, place inside a pillowcase or mesh bag before washing. Always use cold water, mild soap and run on a gentle cycle. Never bleach your pack. Hang to dry in a warm but shady place, ensuring both inside and out are dry before storing. Dimensions: 1480 cubic inches (24 liters), 18'' x 12'' x 8'' (46 x 30 x 20cm). Material: Polyester.