Osprey Four Season Insulation Kit Silver O/S


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.

FEATURES: 1. Heat-reflective, closed-cell foam sleeve offers maximum insulation 2. Tailored insulated reservoir sleeve with attachment loops 3. Insulated hose protected from direct sunlight 4. Zippered bite valve insulation sleeve helps keep mouthpiece free of ice 5. Removable bite valve sleeve for summer use 6. Reservoir must be purchased separately

In stock

Rocktown Adventures

Rocktown Adventures is a specialty outdoor retailer and outfitter. We embrace an active outdoor lifestyle and want to take our passion for outdoor recreation and use it to help you find yours.

Hours of Operation

Available by appointment on Monday's and outside hours of operation.

Monday: CLOSED
Tues-Fri: 10am-6:30pm
Saturday: 10am-5pm
Sunday: 11am-5pm

Located in Rockford, IL


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