Women's Smartwool Classic Thermal Merino Base Layer Pattern Crew footwear-active So light it feels like

So light it feels like nothing

OS1st's Skin Thin Zones Technology keeps your legs cool and applies varying levels of pressure to six different zones

The search for a weatherproof running jacket can be daunting

This incredible flask is designed to be grip-free and lightweight and features double-wall construction to keep fluids cooler

Women's Smartwool Classic Thermal Merino Base Layer Pattern Crew footwear-active So light it feels likeOur Women's Classic Thermal Merino Base Layer Pattern Crew has been elevated to help bring you more comfort to conquer cold weather days and activities. We've updated this 100% Merino wool fan favorite with new colors and a new fit to improve functionality while enhancing aesthetics. Shoulder panels eliminate top shoulder seams and a flatlock seam construction helps minimize chafing. Add one of our best base layers for cold weather to your winter