Put a lid on it with the Dakine Lid Backpack 26L. Lid 26L pack goes from school to skate park in a cinch thanks to the skateboard carry straps. Take your laptop along for the ride. Wherever you're headed, head there in style. 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. Details: 600D polyester, padded laptop sleeve, fits most 15'' laptops, skateboard carry straps, zippered side pockets, adjustable sternum strap, limited lifetime warranty. Dimensions: 1607 cubic inches (26 liters), 20.5'' x 16.5'' x 9'' (52 x 42 x 23cm). Material: Polyester.