NWT Smartwool Women's Merino 250 Baselayer Leggings. Size XL. • Slim fit baselayer bottom • Fit updated to improve functionality while enhancing aesthetics • Mid-rise sits at just below the belly button for superior comfort • Flatlock seam construction helps minimize chafing to keep your skin happy • Merino-covered elastic waistband adds comfort Technology: • Merino 250 fabric offers breathable warmth, moves sweat away from the body, and provides next-to-skin comfort in colder conditions