You're known by your skiing friends as having perpetually frozen feet after ditching fresh powder turns to sit beside the ski lodge's roaring fireplace, just to thaw out your dogs. Eliminate your frozen feet once and for all with the battery-powered warmth of the Thermic PowerSock Set 1400 Bluetooth. This pair of battery-powered socks keeps your feet toasty in the coldest of conditions, no matter if you're skiing in the Northeast on a sub-zero day or shoveling out the driveway in the midst of an Alaskan winter. Since it's hooked up with Bluetooth technology, you can control the heat settings with a compatible app for both Android and iOS devices. The rechargeable battery lasts up to 16 hours, meaning it's good for multiple days of skiing without needing a boost in battery life. These battery-powered socks come with a USB charger (wall charger not included) for rapidly powering them up after a long day on the mountain. They're designed to slip over-the-calf for integration with ski and snowboard boots, plus they're reinforced along the shin, ankle, and instep for optimal support when you're skiing and riding.