Winter Heating Gloves with Water-resistant Fabric and Breathable Film This is a pair of newly design heating gloves to keep hands warm and to avoid hands to be frozen or frostbitten in frigid winter Suitable for outdoor activities under frosty climate Five layers design: water-resistant fabric and breathable film, 3m thinsulate insulation fill, soft and efficient etched metal heating element and polar fleece lining, to make the gloves soft, flexible, durable, and comfortable to wear These gloves use DC power source There is no risk of electric shock These gloves can use 3 x AA disposable batteries or rechargeable Ni-Mh batteries We also provide a 3.7V Li-ion battery (optional) Electric power can last for three hours continuously using rechargeable Ni-Mh battery