Easy to UseOur heated socks are easy to use, just press and hold the battery on/off button for 2 seconds, the 3 battery indicator lights represent 3 levels (all on for the hottest level) , press the battery on/off button again for 2 seconds to turn off.3 Heating ModesYou can choose 4 heating modes: Medium high temperature heating (65; can work for 6.5 hours), Medium temperature heating (55; can work for 9 hours), Low temperature heating (45; can work for 11.5 hours).You can adjust the thermal socks according to your personal needs and preferences.Machine Washable Quality MaterialOur cycling socks are made of high-quality elastic material that is not easy to deform to provide greater comfort and durability. Our heated socks can be washed by machine or hand, please make sure to remove the batteries before washing.You Can GetBy purchasing our products you can get a pair of rechargeable heated socks, 2 batteries, 1 dual connector charger, 1 user manual, and 1 gift box. Widely UsedOur thermal socks are unisex. In addition to providing warmth in winter, our thermal socks are also perfect for outdoor activities such as hiking, camping, skiing, fishing, etc. ensuring your feet remain warm and comfortable no matter the situation.