The Upwell gloves feature three selectable power settings. A built-in rechargeable battery powers the heating element. These heated gloves are popular among winter cyclists, skiers, and anyone prone to cold hands. - Palm: Goatskin leather - Technical membrane: Aquasealz, waterproof and breathable - Insulation: PrimaLoft Gold insulation fiber, with a coating that reflects heat back towards the body - Lining material made from polyester - Maximum operating time of up to six hours on the lowest power setting - Adjustable wrist strap - Control button located on the back of the hand