The Sherpa Roller combines the convenience of a rolling bag with the adventure travel need for a backpack. This convertible travel bag features plenty of storage in the main compartment with handy side compression straps to keep your load compact. Additional storage can be found in the interior lid organizer pocket and a discreet interior security pocket. The Sherpa Roller goes to the end of the road and keeps going. Details: Convertible design with zip-away backpack carry, interior lid organizer pocket, side compression straps, interior security pocket, retractable handle, replaceable urethane wheels, limited lifetime warranty. If your luggage gets dirty, Dakine recommend spot cleaning with mild soap (like Nikwax Tech Wash), cold water and a soft bristle brush. Never attempt to put your Dakine luggage in a washing machine. Always ensure your Dakine luggage is dry (inside and out) before storing. Dimensions: 3705 cubic inches (60 liters), 24'' x 13'' x 13'' (61 x 33 x 33cm), 9 lbs. (4kg). Material: Polyester.