BlackHawk HydraStorm S.T.R.I.K.E. Cyclone 100oz Hydration Pack is versatile and rugged. Massive and equipped with an internal hydration system, the BlackHawk HydraStorm Cyclone Backpack has rapidly become a customer favorite! The hydration pack is protected by Microban antimicrobial technology. The ever-reliable Blackhawk bite valve and quick disconnect system lets you easily load up, move out, drink while on the go, and unload quickly. The BlackHawk Cyclone Pack features twin compartments for extra storage; the large main compartment has an internal pouch for radio packs and features 3 antenna ports with flaps. You can add as much additional gear as you need to the BlackHawk Hydra-Storm Hydration Backpack, with over 100 external S.T.R.I.K.E. webbing attachment points. This Blackhawk Hydration Pack gives you superior comfort when you're in for the long haul - it's got a reinforced waist belt that takes the load off your shoulders, and contoured, padded shoulder straps and sternum strap that let you adjust the backpack however you need.