Our new Guide Pro Smart Heated Mittens feature Clim8® intelligent heating technology that regulates warmth based on your body temperature and activity level. Just set your desired temperature on the app and these AI-powered mittens will continually adjust to your needs. These innovative mittens feature WeatherEdge® Plus waterproof technology to keep your hands dry in wet conditions and PrimaLoft® Gold insulation to retain heat. The durable and flexible Pittards® leather shell is designed around the hand's natural shape for exceptional comfort and maximum dexterity in cold conditions.Run time depends on heat settings, use, and range of wear.SHIPPING INFO: Because of the lithium battery, standard/ground shipping is required for this product.NOTE ON SIZING: These gloves feature a performance fit which is secure on the hands and fingers without restricting mobility. Please refer to the size chart to get the best fit.WARNING: The charging pin for this product can expose you to lead, which has been identified as a harmful substance. See