The heating power and comfort of wool gets an electronic boost with the Gerbing 7V Heated Wool Socks. Featuring a wool blend that's already cozy and warm, these electric heated socks add a full footpad heating system and touch-button controls to provide the ultimate in foot-warming performance. Using microwire heating elements, these wool socks deliver even heat distribution, while the easy-to-use controls let you cycle between 3 temperatures from low (100F) to high (140F). The moisture-wicking wool blend keeps your feet dry. The Gerbing 7V Heated Wool Socks use rechargeable 2,200 mAh batteries (included) and come with a dual charger. Mfrs. lifetime warranty on the heating elements. Imported.Manufacturer style #: GER-SK-7V-W. Wool blend delivers warmth and moisture-wicking performance Full footpad heating system with microwire heating elements Touch-button controls let you cycle between 3 temperatures Includes rechargeable batteries and dual charger