Smartwool Men's Merino 150 Baselayer Bottom (Old Style) Down The included 3L Shape-Shift reservoir

The included 3L Shape-Shift reservoir is equipped with performance features

while the Thinsulate insulation keeps the heat in

and straps that cinch and release seamlessly

Knit in Vietnam: 100% Merino Wool

5-11 racked on a Micron carabiner

Smartwool Men's Merino 150 Baselayer Bottom (Old Style) Down The included 3L Shape-Shift reservoirA year round favorite, our Merino 150 Baselayer Bottoms work hard to keep you comfortable everywhere from the ski hill to the campsite. Ultra smooth Merino helps regulate body temperature, breathes well and naturally resists odors. What else do you need in a baselayer? How about smooth flatlock seams to help minimize chafing and a wide, fabric covered waistband. Featuring Core Spun technology, we've wrapped Merino around a nylon core for added