The Steiner Radiator glove range has been developed after years of research. The anatomical internal heating system uses a soft non-woven environmentally friendly fabric and covers the whole of the palm and fingers. Heat is transferred quickly over the whole hand for total warmth in cold conditions. The patented heating system is flexible, anti-corrosive and has a high heat transmission ability. It is also washable and antistatic. The portable 2200mAh Lithium-ion batteries weigh 85g each. The twin adaptor charging unit enables the user to charge both batteries at the same time. Features Electronic battery powered heating system 3 level heating control Optimum duration of 8.5 hours Easy reach on/off LED heating switch Soft-shell outer combined with leather palm 100g Primaloft™ insulation Gauntlet cuff with smart closure wrist-strap Touch screen compatibility 2-year warranty