Smartwool's Men's Merino Sport 150 Boxer Briefs are designed to perform, no matter the trail, road, or adventure you're on. They feature a double front panel designed to provide extra support, a flatlock seam construction designed to eliminate chafing, and a wide elastic, Merino-lined waistband designed for extra comfort. They're made with a fabric that combines the sweat management, temperature regulation, and odor resistance of Merino with the durability and quick-drying time of polyester. These briefs are made to help keep you cool and dry while you're out doing what you love. Body: 56% merino wool44% polyester. Back panel: 54% merino wool46% polyester. Wide, merino-lined elastic waistband. Extra-supportive front panel. Flatlock seams reduce irritation and chafing. Moisture- and sweat-wicking material offers temperature regulation to keep you cool. Merino wool offers natural odor resistance. Polyester blend improves quick drying. 3 in. inseam. Imported.