The Smartwool Women's Merino 250 Base Layer is a warm and moisture-wicking bodysuit top for camping. This base layer is made from 100% Merino wool, providing insulation and odor resistance. It has a slim fit and a crew neck design for a comfortable fit. The Merino 250 Base Layer features flatlock seams to prevent chafing. It has a UPF 50+ rating for sun protection. With its natural moisture-wicking properties, it keeps you dry and comfortable during your camping adventures.