Made of polyester with total 5 pockets. Top lid pocket for compass, maps, small essentials or raingear. One large front zippered pocket. Two large zippered side pockets. A separate sleeping bag compartment with detachable divider from main compartment with easy access. Extra webbing holders for attaching additional gear to outside of pack. Many tightening straps with buckles for securing the backpack. PVC coated internal provides excellent water protection. Fits torso: 15 - 21.5 inches. Fits waist hip: 30 - 59 inches.