Smartwool Women's PhD Tight 44% Nylon, 36% Merino Wool, 20% Elastane Knit in Vietnam Knitting method concentrates Merino against skin and nylon/elastane against the elements Draw cord for customizable waist fit Secure zip pocket on back with semi-auto locking zipper pull and drop-in pocket on left side for additional storage Size M inseam: 27.5" (70 cm) Slim Fit; Mid Rise - Style: SW015070