These gloves have battery-powered integral heating elements that gently warm hands for up to eight hours. Unlike gloves that use disposable heat packs, you can adjust the temperature via a convenient power switch or turn off the heat entirely. Because they are powered by alkaline batteries, the gloves can maintain their warmth continuously simply by replacing batteries. Four AA batteries in each glove provide up to eight hours of warmth on low power, or six hours on high. Flat, removable battery packs on the back of each glove are slim and lightweight so as not to impede manual dexterity. Fully lined with a waterproof, breathable material, the durable polyester gloves have non-slip palms and thumbs, oversize cuffs that fit over jacket sleeves, and an elastic cinch cord to keep out snow and ice. Imported. Black. Sizes M, L, or XL. (10 oz.)