The Revolution of Cold.
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 ensure that you're well hydrated for longer rides; and the quick stash pockets are easy to reach without ever removing your pack.



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 three hours.


Stretch Ripstop Bottle Pockets
Puncture and tear resistant with four-way stretch for easy access to your 12 - 24 ounce (355 - 710 ml) Hydro Flask bottles.
Easy Access Storage
Quick-stash pockets inside and out for easy access without the need to remove your pack.


Gear Straps
Strap on an extra layer or compress your load - tuck the straps away when not in use for seamless storage.
Product Details
- Cold Flow System™️ keeps water cold for 3+ hours
- HydraPak®️ IsoBound™️ 1.5 L 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 355 - 710 ml (12 - 24 ounce) Standard and Wide Mouth Hydro Flask bottles
- Deployable, adjustable gear and compression straps
- Dual zippered hip belt pockets
- Internal organisation for tools, snacks, keys and other essentials
- Soft-lined media and sunglasses pocket
- Bike light attachment
- Reflective logo
Size and Dimensions
Volume | 5 L |
---|---|
Weight | 0.26 kg (0.57 lb) |
Best Use | Mountain Biking |
Water Capacity | 1.5 L |
Dimensions | 8” L x 10.5” W x 6” D |
Gender | Unisex |
For a stable ride
Shifts weight with a lower reservoir position for a low centre of gravity and increased stability.
Grab and go
Multiple storage compartments designed to quickly access tools, snacks and sunglasses with plenty of space for a layer.
Take anywhere
The fabric is puncture, tear and abrasion resistant, yet lightweight and portable. The robust base construction provides durable support on any surface.
We have great faith in our products
Hydro Flask guarantees this product with a limited lifetime warranty against manufacturer defects.
Hydro Flask supports non-profit organisations focusing on building, maintaining, restoring and providing better access to parks. Since 2017, we have been doing just that:
-
92 Non-profits supported non-profits.
-
$1.5 million Dollars (approx. £1.197 million) donated donated.
-
26,043 Bottles donated bottles.
Hydro Flask supports non-profit organisations focusing on building, maintaining, restoring and providing better access to parks. Since 2017, we have been doing just that:
-
92 Non-profits supported non-profits.
-
$1.5 million Dollars (approx. £1.197 million) donated donated.
-
26,043 Bottles donated bottles.