Smartwool Classic Thermal Merino Base Layer Bottom – Women's Color:Black Merino wool in the fabric

Merino wool in the fabric blend means natural odor resistance and temperature regulation without the bulk

stable underband — built for gym workouts

DryVent waterproof membrane paired with a durable ripstop and mesh upper keeps feet dry without trapping excessive heat

available in Blue Night and Beluga in sizes S through XXL

the Arque 3" is our pick for women who want a versatile short that handles trail hikes

Smartwool Classic Thermal Merino Base Layer Bottom – Women's Color:Black Merino wool in the fabricBuilt for cold weather output on the trail or in camp, this merino base layer bottom is our pick for plus size athletes who need warmth that actually moves with them. Thermal interlock merino wool regulates temperature and wicks moisture without synthetic cling, so you stay dry whether you're pushing hard or standing still. Flatlock seams and a plus specific cut mean no bunching, no chafing, and real coverage where it matters. Thermal weight merino