Bum Bags Hydro Flask

Designed to keep your water cold and back ventilated, the Down Shift™ Hydration Hip Pack features our revolutionary Cold Flow™ System that keeps water chilled for 3+ hours. The ripstop bottle pockets more→ensure you’re well-hydrated for longer rides, and the quick stash pockets are easy to reach without ever removing your pack. Product Information: Cold Flow System™? keeps water cold for 3+ hours HydraPak®? IsoBound™? 1.5L Insulated Reservoir High-flow HydraPak®? Blaster Bite Valve self-seals after each sip HydraPak®? Plug-N-Play™? connect system for convenient refilling Dual stretch bottle pockets fit 12 – 24 ounce Standard and Wide Mouth Hydro Flask bottles Deployable,