THERM-IC Ultra Warm Comfort S.E.T® Heated Socks"Get the most out of your skiing experience with these thin, technical Ultra Warm Comfort S. E. T heated socks, specially designed for skiers facing extreme conditions. Thanks to our new Smart. Elastic. technology, these socks have the perfect fit in footwear, without compromising on comfort or feel. The thin S. E. T heating line diffuses subtle heat around the toes without altering the fit. Polyamide fibres provide good support for the foot and leg