3D Hydro Reservoir Size:2L An intuitive dial control adjusts

An intuitive dial control adjusts fit

In addition to its low and full-strength white modes

resists dirt and adjusts to different temperatures throughout the year

fatigue-easing arch support

3D Hydro Reservoir Size:2L An intuitive dial control adjustsGregory's 3D Hydro Reservoir includes a patent pending, soft molded 3D design that allows it to perform like a reservoir but dry as quickly and cleanly as a water bottle. Its self supporting, baffled construction dramatically speeds up drying time and discourages bacteria growth, so you can get back out on the trail without worrying about funky water. Other innovations include an integrated QuickDry hanger, magnetic DryLock bite valve, and rapid mount