SmartWool Men's NTS Mid 250 Boot Top Bottom 100% Merino Wool Knit in Vietnam Elastic closure 4" high 5" wide Slim Fit; Mid Rise - Interlock knit Covered elastic waistband and traditional fly design Flatlock seam construction designed to eliminate chafing Size M - Inseam: 20.5" (52 cm) - Style: SW0NP660 Machine Wash Warm, Gentle Cycle Wash With Similar Color Do Not Bleach Tumble Dry LOW Cool Iron When Needed Or Dry Clean - For best appearance, wash garment inside out and flat/line dry.