The Phoenix back pack is a uniquely designed frameless pack with a padded back and body. The contoured S shoulder straps have a detachable sternum strap and torso lumbar support. The inside back has a pouch to fit an optional 100 oz. BLACKHAWK! HydraStorm Hydration System. The pack s main compartment has two internal securing straps and a pair of utility gear attachment straps. Ventilating back panel. Silent zipper pulls. Weapon lock system lined with HawkTex. External side compression straps. Made of 1000 denier nylon. Heavy-duty carry/drag handle. Fully adjustable pack height and sway stabilizer system. Two sets of securing straps (ground mat, sleeping bag, etc.) D-rings for equipment attachment on the shoulder straps