All New Swix Shield Pro split mitt is the best System IV mitt to date, designed to keep you warm dry and comfortable. The flexible yet water proof upper allows training in the most adverse weather conditions. Fully insulated with chopped Primaloft on the palm and upper for warmth and breathability. Reinforced Amara palm with digitized pads for shock absorption. Swix unique gussets thumb for flexibility and breathability, a water proof membrane in the upper & Soft flexible suede upper, Lycra finger walls.