It's a tote that doubles as a party cooler. Stash all your beach, music festival or picnic essentials in the main compartment, then fill up the roomy watertight internal cooler pocket with ice packs and beverages-there's even a bottle sleeve to hold a full size wine bottle. Keep track of loose items in the roomy zippered internal pocket and the external zippered pocket. Details: Waterproof insulated cooler compartment with bottle sleeve, interior zippered pocket, exterior zippered pocket, 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: 1500 cubic inches (25 liters), 15.5'' x 15.5'' x 6.5'' (39 x 39 x 17cm), strap drop 11'' (28cm), cooler compartment 13'' x 12'' x 3.25'' (33 x 30 x 8cm). Material: Polyester.