Sometimes the sleeves of a jacket aren't necessary from time to time. Although, wearing a vest should keep you warm. CLIMAPROOF® WIND provides protection in windy and light rain conditions. PRIMALOFT® SPORT 100 g/m2 insulation. Primaloft is the warmest synthetic insulation material known to all human beings. FORMOTION™ is the ultimate in performance and comfort while in motion. Better place built in a sustainable way.