Goat leather palm for enhanced abrasion resistance and durability. Three heat settings for optimum cold weather performance, with each hand capable of being regulated individually. Incorporates Alpinestars 100% waterproof and breathable Drystar performance technology for effective all-weather protection and a reduced material design offering superior sensitivity on the bikes controls. Alpinestars Heat Tech System features a superior stainless enameled copper-nickel heating yarn for proven durability, bend resistance and heat stability. 7.4V lithium battery for reliable, long-lasting power to the Alpinestars Heat Tech System with an electronic controller for long life and security. Micro USB - Y cable included to connect both batteries simultaneously. Easy-to-external control button allows riders to select one of three heat settings. Gloves feature Alpinestars Heat Tech System which distributes balanced warmth in the coldest of conditions. 80G PrimaLoft insulation for additional warmth and effective heat retention. Softshell for optimum comfort and fit. Ergonomic stretch construction for an optimal fit. Palm slider for additional abrasion resistance. Rolled fingertips offer better heat retention and reduction of cold air penetration and for increased sensitivity with the bikes controls. Sturdy knuckle for superior protection against repeated impacts. Touchscreen compatible fingertip area on index and thumb.