Backcountry Ignite GlovesFeatures: Goat leather palm, 200 gram insulation back of hand, 100 gram palm insulation on the palm Speed Cinch Closure for easy on and off, and secure fit when riding ; 5TECH waterproof breathable materials 7.4 volt heating system with carbon heating elements on back of hand and back of thumb 7.4 volt Lithium Ion batteries in gauntlet ; Run time on low up to 5 hours, high setting 2.2 hours with Easy gauntlet adjustment Additional 7.4 Volt Ignite Glove Battery Set sold separately ; California Prop 65 The next evolution of our best selling Backcountry Ignite Glove, now with seamless motion detection activation, simply slide on the glove to activate passive heating for up to five hours of added warmth. Featuring new Ignite with Clim8 technology powered by the compact and rechargeable 7.4- volt lithium-ion battery pack. This intelligent heating technology regulates warmth based on body temperature and activity level. Just set your desired temperature on the Clim8 app and these smart powered gloves with continually adjust to your needs, for cold riding conditions or poor circulation challenges.