Adventures are messy. If your Dakine bag gets dirty they 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. This messenger bag from Dakine features: Separate padded laptop compartment, fits most 15'' laptops, zippered top closure, adjustable padded shoulder strap, open back panel to slide over travel bag handle, interior organizer pocket, limited lifetime warranty. Dimensions: 1000 Cubic incheses (17 liters), 15 x 12.5 x 6'' (38 x 32 x 15cm). Cross body strap length 11 to 26'' (28 to 66cm). Material: Polyester.