The streamlined Factor is a slim-fitting school pack for the minimalist student. The Factor features a roomy main compartment with a secure laptop sleeve, an organizer pocket, a fleece-lined sunglass pocket, plus a low-profile front zippered pocket and mesh side pockets. Everything has a place in this compact carrier. 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, organizer pocket, fleece lined sunglass pocket, mesh side pockets, zippered front pocket, limited lifetime warranty. Dimensions: 1350 cubic inches (22 liters), 18'' x 13'' x 8'' (46 x 33 x 20cm). Material: Polyester.