For unbeatable defense against cold weather, SmartWool's NTS Mid 250 Bottoms deliver with the softness, warmth, and moisture managing performance of pure merino wool. . NTS next to skin Mid 250 base layer for cold weather performance. Fine merino wool fibers provide supersoft, itch free comfort and warmth SmartWool breathes, manages moisture, regulates temperature, and naturally resists odor. Interlock knit. Wide self fabric covered elastic waistband for comfort and a flattering fit. Flatlock seam construction is designed to elimninate chafing. Heat transfer logo at left hip. Inseamsize M: 30 in. 77 cm. Form fit: Slim fit follows the contours of the body. Natural rise.