Fit & Design: Fitted base layer bottoms Constructed with temperature-regulating wool-poly blend to help you stay warm Strategic seam placement to reduce chafing Smooth flatlock seams, Y-split waistband, and contoured front for comfort Fights odors to keep each fiber feeling fresh and new Technology: Features Force FastDry(R) technology that wicks sweat and dries fast Built to move with Rugged Flex(R) stretch technology for maximum mobility