Women's Classic Thermal Merino Base Layer Crew everydaysocks the Women's XCS900 v4 has

the Women's XCS900 v4 has a bootie-like construction and is streamlined for speed

prevent common running injuries

This racing spike has a dual-density midsole that uses a firmer density foam in the forefoot for a responsive toe-off and softer cushioning in the heel for a forgiving landing

windproof front panel fights the elements

enabling you to confidently transition between dry and slippery pavement without affecting your natural running motion

Women's Classic Thermal Merino Base Layer Crew everydaysocks the Women's XCS900 v4 hasIntroducing the upgraded Smartwool Women'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