The Explorer backpack is ready to go in a hurry with an easy-to-pack roomy main compartment and a grab-and-go built in top handle. Additional features include a fleece-lined sunglass pocket, dual mesh side pockets and an organizer pocket to keep things in their place. The external skate carry straps can also hold those extra layers you grab as you're running out the door. 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, skateboard carry straps, fleece lined sunglass pocket, organizer pocket, mesh side pockets, adjustable sternum strap, limited lifetime warranty. Dimensions: 1600 cubic inches (26 liters), 20'' x 12'' x 10'' (50 x 30 x 25cm). Material: Polyester.