Osprey Hydraulics LT Water Reservoir 2LtrOsprey has worked hard to develop significant improvements in the world of hydration reservoirs with their Hydraulics 2L Reservoir. A 1 4 turn is all you need to open the reservoir, which has a wide mouth for easy filling, cleaning, and drying. The wider tube dispenses water more quickly, and the overall shape of the reservoir is flatter when filled to prevent that bulging profile many other reservoirs maintain. With two liters of volume, the