Volt Frostie Heated Glove SIZING: Measure the circumference around the middle of the hand. XS - 6", S = 7", M = 7.5-8", L = 8.5-9", XL = 9.5-10", 2XL = 10.5" FEELS GREAT: Constructed with a tricot fleece lining, waterproof/breathable membrane, outer nylon shell with leather palm. HIGH POWERED: The Frostie gloves include two rechargeable 2200mAh batteries and dual charger rated for 500+ cycles. EASE OF USE: These gloves are designed to let you change the temperature on the fly with a simple push of a button. Choose from 4 power level settings. USA-DEVELOPED: Designed, developed and shipped from right here in the USA. Our company was founded in the Pacific Northwest with a commitment to help people stay warm. You wont have to guess what youll get with Volt products