Backpacks Hydro Flask

The Revolution of Cold:- Our Down Shift™ Hydration Pack features our revolutionary Cold Flow™ System that keeps water chilled for over 4+ hours.Designed to shift weight down for a stable ride while of more→fering ample storage for your gear.Water stays cool.You stay comfortable.Mile after mile.Cold Flow™ System:- Our revolutionary Cold Flow™ System includes an insulated reservoir, neoprene reservoir sleeve with reflective lining and articulated back panel to keep water cold for over 4 hours.Insulated Reservoir:- HydraPak® IsoBound™ 2 L insulated sweat proof reservoir helps to maintain cold water temperature for hours.Neoprene Sleeve with Reflective Lining:- Insulating neoprene reservoir sleeve with…