Heating Element: 4.5V heated gloves has been upgraded to a carbon fiber heating elements. Carbon fiber heating elements covers whole back of the hand. Promote blood circulation.Reduce hand cold and Hand frostbite problem. Say goodbye to Raynaud's,Arthritis,Bad Circulation, Stiff Joints. Men Women Gloves: Heated gloves made from high quality spandex fabric cotton. The electric rechargeable heated gloves have 3 layers: waterproof coating fabric, breathable, heating and insulation, reinforced PU leather ( in palm & finger). High quality fabric electric gloves will keep you through the cold winter Heating Temperature: 35-45. Battery boxes provided in package are suitable for AA batteries(Not included Batteries), and the heating effect of this 4.5 heated gloves depends on the battery using, highly recommend use the rechargeable li-ion batteries, the heating effect will be better.