Advanced System Pack offers choice of 5 interchangeable pack styles. Contoured Harness features padded lumbar belt and shoulders with elasticized, adjustable sternum strap that fits men and woman of almost any size. Blaze Tamer style offers 1,300 cu. ins. of space and holds 8 fusees, 4bottles, and outside-accessible 95-oz. water bladder. RX Pro, Load Master, Torch, and Hydro Cool styles also available. Add ASP top pockets for additional storage capacity.