BlackHawk HydraStorm 100oz Hydration Bladder, Black Cap and Tube is a part of the high quality and dependable Hydration System Accessories from BlackHawk. All of the features you need for a price you want. Hydration System Accessories from BlackHawk are well known for their quality and BlackHawk HydraStorm 100oz Hydration Bladder, Black Cap and Tube upholds that standard.