Quality and lightweight backpack with padded shoulder straps and back system, waist belt for a comfortable carrying, compression straps on the sides of the bag, mesh pockets for bottles on both sides, loops for poles and ice axes, two emergency pockets, front pocket with buckle closing, middle zipperpocket with compartments for small items and zippered pocket forvaluables and very spacious main compartment with separate pocket. The backpack is including orange safety whistle. Material: polyester 420D polyester with pvc backing+210D ripstop with pubacking+210D polyester lining. Capacity: 31 l.