Skip to main content

Osprey Four Season Insulation Kit

Osprey Four Season Insulation Kit
Please select options


Keep water flowing in cold winter months and cool in the heat of the summer—this four-season insulated kit is ideal no matter the season. Featuring closed-cell foam, a heat-reflective coating, removable bite valve sleeve and easy-carry attachment loops. Fits reservoirs up to 3 liters. *Compatible with Hydrapak reservoirs produced after 2013.

Heat-reflective, closed-cell foam sleeve offers maximum insulation
Tailored insulated reservoir sleeve with attachment loops
Insulated hose protected from direct sunlight
Zippered bite valve insulation sleeve helps keep mouthpiece free of ice
Removable bite valve sleeve for summer use
Reservoir must be purchased separately

O/S 0 IN3 / 0 L 16.7H X 8.27W X 1.77D IN. 0.45 LBS.
MAIN. 200D HT Nylon w/Heat Reflective Coating
WARNING: This product can expose you to chemicals including dimethylformamide, which is known to the State of California to cause cancer. For more information, go to