Classic Thermal Merino Base Layer Bottom — Women's Slip-Ons With its lightweight Titanal construction

With its lightweight Titanal construction and versatile profile

and you have a helmet to match your dedication

Thermostat Control - Thermostat Control Adjustable Venting allows you to custom-tune airflow instantly with a simple

and odor resistance—making it an essential next-to-skin layer for winter adventures

Original Fit–Iconic KEEN fit with generous space across forefoot for toes to spread out

Classic Thermal Merino Base Layer Bottom — Women's Slip-Ons With its lightweight Titanal construction100% Merino. 100% capable. Our Women's Classic Thermal Merino Base Layer B is always ready for what's ahead and what's next. With a fit updated to improve functionality while enhancing aesthetics for a range of body shapes and a flatlock seam construction designed to minimize chafing, comfort is never in question. Get yourself a pair or two of our best base layer pants and conquer the cold with more confidence than ever.