Designed to avoid getting cold hands by keeping the exposed veins on your wrist covered and warm, the wrist warmers bridge the gap between the tops of short gloves / mitts and jacket ends. Insulated with Primaloft Sport and shelled with 30 denier microfibre nylon, the wrist warmers are held in place by two sewn-in light-weight elastics with enough stretch to pull over the hand and still sit comfortably on the wrist.