This is the new do-it-all backpack you've been looking for. Built as a quiver of one, this voluminous pack features a top loading design with continuous side zippered access as well as an internal sleeve for hydration or a laptop. Details: Breathable air flow backpanel, ergonomic breathable shoulder straps with quick access phone pocket, removable 25mm web hipbelt, front panel zippered main access, floating front storage flap, fleece lined sunglasses pocket, large quick stash side pocket, internal zippered pocket with key clip, stowable trekking pole loop, hydration/laptop internal sleeve, fits most 15'' laptops, integrated rescue whistle/sternum strap, bike safety light clip-in, limited lifetime warranty. 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. Dimensions: 1200 cubic inches (20 liters), 20'' x 11'' x 7.5'' (51 x 28 x 19cm), 1.4 lbs. (.63kg). Material: Polyester.