CLOSEOUTS. Go ahead and turn up your nose at the cold. Youand#39;ve got PolarFleece Polartecand#174; Power Gridand#174; base layer pants to keep you warm. Theyand#39;re made from a moisture-wicking, stretchy knit fabric with interior grid channels that provide warmth without adding bulk, and they promise a comfortable fit with an elastic waist and flatlock seam construction. Available Colors: BLACK, BLUE. Sizes: S, M, L, XL.