Osprey 4 Season Insulation Kit
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, a 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