Cerium SL Jacket Women's Arctic Silk *The Proton Hoody was previously

*The Proton Hoody was previously the Proton LT Hoody

Functional performance and casual style in a skort for urban cycling and daily wear

water repellant GORE-TEX INFINIUM™ hoody with refined urban style

comfort-stretch textiles

Highly technical jacket with complete storm protection

Cerium SL Jacket Women's Arctic Silk *The Proton Hoody was previouslyOffering great warmth to weight in a super compressible package, this is the lightest weight down jacket in the collection filled with 850 grey goose down. This backcountry specialist jacket is intended primarily as a mid layer in cool, dry conditions. Down Series: Down insulated garments SL: Super Light.