GGYD Heated Socks 4000mAh Rechargeable Battery Heating Socks 3 Settings Electric Socks for Men and Women, Washable Warm Winter Socks for Outdoor Riding/Camping/Hiking/Motorcycle/Skiing(Black)Specification: Color: Black Size: Free Size Voltage: 3.7V Battery: 2*4000mAh Rechargeable Battery Package list: 1 * A Pair of Heated Socks 1 * A pair of Batt..