We've updated our Men's Classic Thermal Merino Base Layer Bottom to bring you a better fitting, more functional tight. The technical benefits of 100% Merino wool will help you keep your game at a high level for longer. And our heaviest weight wool fabric will help keep you warm and comfortable as you ski, run, and hike the day away.Features Slim Fit 100% Merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation, and odor resistance Fit updated to improve functionality while enhancing aesthetics Merino-covered elastic interior waistband and traditional fly design Flatlock seam construction designed to minimize chafing Size M inseam: 30" (76 cm) Knit in Vietnam: 100% Merino Wool Garment Weight: 228 g = 8.04 oz