Fit & Design: Onboard temperature control button allows easy access to the 3 heat settings providing adjustable warmth Strategically placed heating elements use ultra-fine fibers for optimal heating performance An integrated heating system located along the fingers and thumb Innovative outer shell construction, faux suede palm & brushed polyester lining provides extreme warmth Technology: Waterproof zippered battery pocket stores rechargeable lithium-polymer battery Fantex waterproof membrane 40 grams of Thinsulate provide maximum insulation Additional Details: Two ActionHeat 5V Battery Heated Glove Liners w/ heated fingers Two Rechargeable 5V 3000mAh Batteries One 24" Dual battery charger kit Heating time: high (red) - 145F 2+ hours Heating time: medium (white) - 125F 3+ Hours Heating time: low (blue) - 105F 5+ hours