Battery heated socks foot warmer heated insoles power socks kit

20% Wool 【HEATED AREA & HEATED UP RAPIDLY】Heated area at the sole of the foot. With advanced Carbon Fiber Far Infrared Ray (FIR) Heating Method, heated socks can heat up rapidly in seconds. 【COMFORTABLE MATERIAL & WASHABLE】Heated sock is made of 20% Wool，60% Acrylic，10% Spandex, 5% Polyester, 5% Rubber. High-quality wool material with the feature of excellent heat preservation makes you warm and comfortable. This heated sock for men and women can be washed by hand or machine wash(Please remove the battery and machine wash in the laundry bag). 【 HIGH-QUALITY RECHARGEABLE BATTERY】3.7V 4400mah rechargeable heated sock battery can last approximately 3-6 hours. With large capacity batteries, heat socks can keep working for up to 6 hours (Please full charge for batteries before first-time use). 【HEALTH CARE & WINTER GIFT】Electric socks can help promote feet blood circulation and relieve the pain of muscles to some extent. It is also a perfect gift for friends, parents, and other