Smartwool W'S Classic Thermal Merino Bottom 2026 Mens Proven Race Ratchet closure provides

Proven Race Ratchet closure provides a secure fit and quick on-the-fly adjustments

The BOA® Fit System allows for micro-adjustability for a perfect fit every time you ride

FIT: Custom Fit

all-mountain use

Smartwool W'S Classic Thermal Merino Bottom 2026 Mens Proven Race Ratchet closure provides100% 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. Features Rise: Mid Rise Sits