NWOT. Please see pics- LOTS of pockets! Smoke and pet free home. Description from retailer: Bring CamelBak's M.U.L.E. pack along on your next medium to ultra-long endevour. Efficient and compact, this system totes 3 liters of fluid and sports thoughtfully distributed cargo space with internal organizers for tools and gear. The ventilated back panel keeps you dry and the suspension harness delivers excellent support. Plus, the M.U.L.E. even has a weather-resistant electronics pocket and a place to carry your helmet. Liquid capacity: 100 ounces Cargo volume: 549 cubic inches Pack weight: 1.4 pounds