SG is proud to launch another compact and innovatively designed Heated Socks with rechargeable Polymer Lithium Battery working long hours with cozy temperature which keeps your feet warm and comfortable all day long ,great fit for any indoor outdoor activities. Winter Warm Heating Socks Good for blood circulation, warm whole body. We’ve used premium grade materials to make these socks durable perfect for riding motorcycle, climbing, skiing, hiking, hunting, ice-fishing and many other sports and outdoor activities.