Get psyched on Amp 24L Hydration Pack whether you bike mountains, cycle sidewalks, or ride sandstone. 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: 200D nylon, 3L/100oz Hydrapak reservoir with quick disconnect, high-flow blaster bite valve with shut-off, air mesh suspended backpanel, breathable ergonomic shoulder straps, deployable helmet carry, zippered side pockets, fleece-lined goggle or sunglass pocket, internal organizer pockets, magnetic hydration hose clip, side compression, reflective logo, limited lifetime warranty. Dimensions: 1475 cubic inches (24 liters), 20'' x 12'' x 9'' (51 x 30 x 24cm). Material: Nylon.