[Heated Area - Rapidly Heat Up] Heated area at sole of the foot. With advanced Carbon Fiber Far Infrared Ray (FIR) Heating Method, heated socks can heat up rapidly in seconds. [Comfortable Material and Washable] Heatable socks are made of 20% Wool, 60% Acrylic, 10% Spandex, 5% Polyester, 5% Rubber. High quality wool material with feature of excellent heat preservation make you warm and comfortable. This heated sock for men and women can be wash by hand or machine wash, don't include charger [Winter Gifts and Health Care] Electric heating socks can help promote feet blood circulation and relief pain of muscles in some extent. It is also a perfect gift for friends, parents and other family members for coming Thanksgiving or Chrismas Day. Delivering warmth and health to all the persons you care about. [Multi Functional Design] Fashionable and nice-looking design. Breathable warming socks can deodorizate in some extent. Elastic Ribbon Design at feet can help reducing stress and slow down the vibration,which makes this heated socks great for outdoor activities like winter skiing, snowmobile, motorcycle, mountain, camping, hiking and hunting.