The PWRWARM EXTREME JACKET is the lightest and warmest jacket we have ever made. warmCELL technology retains heat close to your body to maintain your optimum temperature. PWRWARM garments are engineered with premium fabrics and styling that provide lightweight warmth to maintain optimum body temperature. Primaloft Gold insulation keeps you toasty warm and the DWR finish makes this jacket water repellent. It will keep you warm and looking great whether you're on or off the course.