Long duration - Each pair of pads provides 8-10 hours of heat. More effective and durable than re -utilizable heating. Consistent temperature - These wonderful winter heaters will keep your hot hands without decreasing the temperature of an average of 58 ° C. optimal size - these glove heaters are designed using specific materials for Release and spread heat in the applied area. Improves circulation - medically proven that these pads increase skill and prevent lip fire. Multi -us - skiing, walks, winter sports, construction sites, home use and much more. Simply place them in the pocket of your clothes, shoes or coat.