Thermal fabric with brushed lining is engineered to trap and retain body heat;Articulated back of knee removes uncomfortable seams;Stretchable rear elastic waistband keeps things put;Soft fold-over front waistband prevents band from cutting in;Tapered ankle design with ample stretch keeps tights close to the skin;Strata inForm Chamois: OverEasy constructed dual-density foam pad;The fitted cut provides a streamlined body fit for enhanced performance;