Snoblast Winter Hydration Pack from Camelbak. This versatile winter backpack can be used on or off piste and has an expandable gusset allowing the main compartment to expand by 5.5L to the lower half of the pack. With 14-19.5L cargo capacity and 2L hydration capacity.

Features

70oz/2L OMEGA™ HydroTanium™ Reservoir with Lifetime Warranty.
Insulated reservoir pocket keeps liquid cool for hours.
Independent Suspension™ Harness optimizes fit and stability.
Helmet carry loop for stashing your helmet while hiking or during transport.
Easy-to-use retention system holds a snowboard vertically and tucks away when not in use.