For your cold-weather workout or any high-intensity activity, the Smartwool Men's Reflective Lid Hat is just what you need to keep your head nice and toasty. The lightweight Merino wool/polyester blend adds warmth without extra bulk. It's breathable, too, wicking away sweat and moisture. Reflective bands are knitted right into the hat for extra protection in low-light conditions. This is a classic beanie design and can go wherever you do. Whether you're headed to the ballpark or commuting to work, Smartwool has your head covered.