The Arcteryx Nozone 55 pack is designed for intense use in rugged alpine terrain. Its features can be stripped down to customize it to your specific objectives and activity needs. Arc on TM suspension utilizes aspects of the award-winning AC2 and Bora suspensions to ride comfortably over all kinds of mountain terrain with minimum sway or load slop. Thermomolded shoulder straps with sternum strap and removable, triple-density hipbelt provide comfortable control and support. Laminated back panel and framesheet are fused to the external bag breathable, padded lumbar and shoulder areas help regulate moisture. Twin 15mm extruded 6061 aluminum stays provide solid load support and weight transfer to the hipbelt. Top-loading main compartment is crowned with an extendable collar and drawcord for additional capacity and a removable, extendable top lid with 2 zippered compartments. Pack exterior features dual haul loops, top grab handle, 2 compression straps on each side, stretch-mesh wand pocket and 1-hand-operable ice axe attachment. The Arcteryx Nozone 55 pack is made with 100-denier Cordura Mini RipstopR and 210-denier RipstormR with silicone and polyurethane coatings. High-wear areas are reinforced with 420-denier Cordura HT plain weave.