Hydration Resevoir V 1lThe Hydration Reservoir 1L is the perfect partner for your Silva Strive running backpack. It fits the Strive series and has a slim, vertical design. The reservoir features Hydrapak IsoBound insulation technology that will keep your water cold and give you a more comfortable carrying experience, even in warm temperatures. It is engineered to keep fluids at an ideal temperature 38% longer than a standard hydration reservoir. After all, cold water is