THERM-IC Ultra Warm Performance S.E.T® Heated Socks"Get the most out of your skiing experience with these thin, technical Ultra Warm Performance S. E. T warming socks, specially designed for expert skiers operating in extreme conditions. Their thin construction and our new Smart. Elastic. technology ensure an optimal fit in your shoes, for maximum comfort and feel. The discreet heating line spreads subtle warmth around the toes, without compromising on the sock's fit. These socks combine thermo