smartwool men's merino 150 pattern boxer brief, charcoal, small smartwool make sure your day gets started off on the right foot with the body temp-regulating and odor-fighting performance of the smartwool men's merino 150 pattern boxer brief. crafted from soft merino wool, this boxer brief keeps you warm in cooler temps, wicks moisture if things heat up, and keeps the build-up of nasty odors at bay after a particularly tough day. its wide elastic waistband maximizes your comfort when you're on the move by keeping the merino close to your skin for a plush fit, while the flatlock seam construction makes chafing a thing of the past. plus, the fly is fully functional to help you out when nature calls.