If you see school more as a break between skateboard sessions, this is the pack for you. The Atlas holds your books, computer, binders pens, pencils, etc., but also features sturdy straps to carry your skateboard when you're sadly not riding it. 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, 300D polyester, 600D recycled PET, non-padded laptop sleeve, skateboard carry straps, fleece lined sunglass pocket, zippered side pockets, limited lifetime warranty. Dimensions: 1500 cubic inches (25 liters), 19.5'' x 12'' x 8'' (49 x 30 x 20cm). Material: Polyester.