The Foundation travel backpack is divided into three zippered compartments including a roomy main compartment, a large front organizer pocket, and a zip-down TSA compliant laptop sleeve that puts the days of haphazardly separating out your laptop at security screenings in the past. The padded flat bottom design keeps this pack upright, while the comfortable ergonomic foam backpanel and breathable air mesh shoulder straps provide cool comfort when hustling across busy transportation hubs. Details: TSA compliant padded laptop sleeve, fits most 15'' laptops, ergonomic foam backpanel and shoulder straps with breathable air mesh, organizer pocket, mesh side pockets, padded bottom panel, adjustable sternum strap, 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: 1600 cubic inches (26 liters), 18.5'' x 12.5'' x 7'' (47 x 32 x 18cm). Material: Polyester.