Therm-ic Foot Warmers are designed to keep your feet cozy and warm during the cold winter months. These slim and practical insoles are perfect for a variety of outdoor activities, ensuring your feet stay comfortable and warm for up to 8 hours. With an adhesive surface, they remain securely in place, providing consistent warmth from the moment you open the packet. Slim and practical design ideal for winter use Provides up to 8 hours of continuous warmth Adhesive surface ensures the warmer stays in place Easy activation by simply shaking after opening Made from natural ingredients like coal, water, and salt MaterialsCoal, water, salt