Men's Classic Thermal Merino Base Layer Crew SIZE:M Removable cups let you personalize

Removable cups let you personalize coverage

Soft Fresh Foam X midsole provides more cushioning without increasing overall weight

Crafted with a Hydroguard™ waterproof membrane

Experience max cushion and dynamic support in the men's Altra Paradigm 8—perfect for road runners

while the XT-900 carbon rubber outsole offers durable traction for a confident run or walk on various surfaces

Men's Classic Thermal Merino Base Layer Crew SIZE:M Removable cups let you personalizeIntroducing the upgraded Smartwool Men's Classic Thermal Merino Base Layer Crew. Crafted from 100% Merino wool, this fan favorite now features refreshed colors and an improved fit for enhanced performance and style. The new shoulder panels eliminate top shoulder seams, while the flatlock seam construction minimizes chafing. Add this top rated base layer to your winter gear and feel the difference during your next skiing, hiking, climbing, or biking