Polyester Made in USA or Imported 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 7.4 volt heating system with carbon heating elements on back of hand and back of thumb Run time on low up to 5 hours, high setting 2.2 hours Additional 7.4 Volt Ignite Glove Battery Set sold separately 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 will continually adjust to your needs, for cold riding conditions or poor circulation challenges.