Paying tribute to the true classics of roll-top packs, the Dakine Sojourn 30L Backpack maintains the vintage feel with a modern look. Highly versatile, this pack's roll-top closure allows you to stuff your clothing, snacks, and books inside the main compartment with ease. 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, 600D nep yarn poly-blend, 600D recycled PET, PU suede or cork, padded laptop sleeve, fits most 17'' laptops, roll top closure with snap details, side access, side cinch pockets, quick access pocket, adjustable sternum strap, limited lifetime warranty. Dimensions: 1831 cubic inches (30 liters), 21'' x 13.5'' x 8.5'' (53 x 34 x 22cm). Material: Polyester.