1KEEP YOUR FEET WARM: Efficient use of body heat, reduce sweat and moisture, an extra warm for the cold winter in weather below 35 degrees. 2COMFORTABLE TO WEAR: Made of 35 degrees celsius aluminized fibers, it relieves leg swelling, eliminates varicose veins, helps maintain body temperature and helps your legs get relaxation and comfort. 3FABRIC: Aluminized fibers are aluminum containing fibers that are antiseptic and provide protection against disease causing microorganisms, while astringent properties help reduce inflammation, swelling, and fatigue. 4LIGHT WEIGHT: The texture of the socks is thin and lightweight, and they can be worn on their own or worn with regular socks and shoes as needed. 5PERFECT FOR WINTER ACTIVITIES: Cold feet can often take the fun out of any outdoor activity. With heating socks, you can skating, hiking or participating other activities without freezing.