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 litres. 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