The Seirus EVO ST Heatwave Glove Liners are prepared to provide warmth, whether you're hiking in winter or heading down the ski slopes. These glove liners feature the perfect fit to keep your hands warm everywhere. They are engineered with EVO Heatwave technology to provide excellent protection for your hands during cold days. They boast the revolutionary dual heating system found in the Heatwave lining, which reflects and amplifies your body's heat to produce that warm cozy feeling. The EVO ST Heatwave technology amplifies the temperature of your hands. They are designed with hypoallergenic materials to provide odor-free no matter how active your day is. The Seirus EVO ST Heatwave Glove Liners are a great choice if you want unlimited softness and protection.