The Revolution of Cold

The Down Shift™ Hydration Pack features Hydro Flask's revolutionary Cold Flow™ System that keeps water chilled for over 4 hours. Designed to shift weight down for a stable ride while offering ample storage for your gear. Water stays cool. You stay comfortable. Mile after mile.

Key Features: 

HydraPak® IsoBound™ 2 L Insulated Reservoir

High-flow HydraPak® Blaster Bite Valve self-seals after each sip

HydraPak® Plug-N-Play™ connect system lets you easily disconnect the hose and remove the reservoir from your pack for convenient refilling

Padded back panel for added comfort

Fully adjustable shoulder, sternum and hip straps

Soft pocket for sunglasses or a phone

Helmet attachment loops

Chest strap with integrated whistle

Webbing for a bike light attachment

Key clip

Hydro Flask Mesh Pocket Compatibility:

12 oz - 24 oz Standard Mouth Bottles

12 oz - 24 oz Coffee, Wide Mouth & Kids Bottles

25 oz Wine Bottle