Dual Fuel Deluxe Battery Heated Gloves by Warmawear - Large Dual Fuel Technology allows you to have back up heat, extend the heating life of your gloves and maximize the glove warmth by combining our disposable heat packs with the battery heating Easy Switch technology located on the wrist strap - no need to remove the gloves to switch them on or off Utility pocket - designed for our Dual Fuel system, this pocket is also great for cards and more Instant Heat feature means you will feel relief from the cold within a few moments of switching the glove on Tecsense fingertips help you to complete basic functions on your touchscreen device without removing your gloves