The Smartwool Women's Merino 150 Baselayer is a warm and comfortable hiking bodysuit top. Made from a blend of merino wool and polyester, this shirt offers excellent temperature regulation and moisture-wicking properties. It features UPF 20 sun protection, protecting your skin from harmful UV rays. The shirt has a slim fit and a crew neck design, providing a flattering and cozy fit. It is odor-resistant and breathable, keeping you fresh and comfortable during your outdoor activities. With its natural fibers and superior performance, this bodysuit top is a popular choice among women hikers.