describe:1. Upgrade the heating element to heat the socks, which can heat up quickly and evenly in 30 seconds. The temperature is stable and covers the forefoot, which can stimulate blood circulation and make the feet less cold and stiff. Perfect for those suffering from arthritis, Raynaud's disease and joint stiffness.2. Designed with 3 heating systems, the 3.7V winter warm rechargeable battery heated socks can meet various needs. Rechargeable heated socks that heat to 150F, medium to 130F, and low to 110F. It is recommended to turn on the heated socks on the highest setting (3 lights) for the first 5-15 minutes, then switch to the medium (2 lights) or lowest (1 light) setting for better results.3. Enjoy the experience of keeping your feet warm and comfortable without worrying about itchy materials or bulky batteries. These heated socks are specially designed with cotton fabric that feels extra soft and breathable, and spandex fabric that provides perfect support for your arches, ankles, and toes. The battery on these foot warmers is easily removable and unobtrusive, so you don't need to carry extra weight.4. Cold feet often make any outdoor activity less fun. With these heated ski socks - you can ski, hike, camp, hunt, fish and shovel to your heart's content without freezing! Anyone who is outdoors or lives in winter temperatures can have fun in the cold wearing these electric hunting socks.5. Heated socks for men and women are an ideal winter gift for those who suffer from poor blood circulation and frozen feet.Specification:Product name: electric heating socksProduct color: black gray, blackProduct thermal energy: 40-50Product material: cotton/carbon fiber heating sheetApplicable gender: Neutral/Both men and womenOne size fits all (US 6-14)Package includes:1 x electric heating socks1 x electric heating socks