Take on a day full of classes with room for everything you need. This is the new do-it-all backpack you've been looking for. 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 14'' laptops, organizer pocket, mesh side pockets, fleece lined sunglass pocket, adjustable sternum strap, limited lifetime warranty. Dimensions: 1200 cubic inches (20 liters), 17.5'' x 12'' x 6.5'' (44 x 30 x 16cm). Material: Polyester.