USB rechargeable heated insole: The heated insole adopts new heating technology, made of comfortable and comfortable EVA elastic material, with good cushioning, portable and lightweight, the heater is comfortable USB interface is heated by USB cable, the heating surface is large, the heat is evenly distributed. Cleanable and rechargeable use: This USB insole material is waterproof, washable and reusable, you can wash it with a brush, not machine washable, it should be noted that it needs to be dried after washing, it must be completely dry before use . Versatile, Best Gift: Heated Insole Keeps Feet Warm In Cold Winter, So Wherever You Go, You Can Stay Warm, Perfect For Skiing & Outdoors, Other Sports, Camping, Housework, Hunting , hiking, fishing, etc., is the best Christmas gift. all Products From Us Have Undergone Strict Quality Checks. Can effectively stimulate the blood circulation on the feet and help resist the cold weather. 1. Accessories: 1 charging cable, 2+remote control, Chinese and English instruction manual, and a pair of insoles 2. Battery and control module, battery: 2100mAh 3. Heating cloth: 10 * 6cm Load impedance: 8 ohms 4. Working discharge time: High temperature 100%: 4 hours 30 minutes around 55 degrees Celsius Medium temperature 75%: 6 hours around 50 degrees Celsius Low temperature 40%: 9 hours around 40 degrees Celsius NOTE: Before Christmas,when purchasing products,we will give you a freeChristmas card as a gift. Welcome to make your purchase!