Long Lasting - Each pair of pads provides 8-10 hours of heat. More effective and durable than re-usable warmers. Consistent Temperature - These wonderful winter warmers will keep your hands warm without decreasing the temperature from an average of 58 ° C. Optimal Size - These Glove Warmers are designed using specific materials to release and spread heat in the applied area. Improves Circulation - Medically proven that these pads increase dexterity and prevent cold sores. Multi-Use - Skiing, hiking, winter sports, construction sites, home use and much more. Simply place them in the pocket of your clothes, shoes or coat.