Hot-Forged for lighter-weight construction

and Down Defender adds an extra measure of moisture management

Full-facial protection that extends below the neckline

Includes dual-density ABS

as well as two internal zippered pockets to organize smaller items

Osprey 4 Season's Insulation Kit Size:2 Liter Hot-Forged for lighter-weight constructionKeep water flowing in cold winter months and cool in the heat of the summerthis 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