Smartwool Thermal Merino Mock Neck Women's Size:Extra Small The security system

The security system

Perfect for high-intensity activities or milder temperatures

the Pacific was made for you

A sophisticated wind- and weather-proof jacket insulated with warm 700-fill-power 100% Recycled Down (duck and goose down reclaimed from down products)

Smartwool Thermal Merino Mock Neck Women's Size:Extra Small The security systemMeet the Women's Classic Thermal Merino Mock Neck. This 100% Merino wool fan favorite combines the moisture management, temperature regulation, and odor resistance of Merino with the comfort of an interlock knit. Its flatlock seam construction helps prevent chafing, and the regular fit helps give you room to move without additional bulk. Add one of Smartwool's best cold weather base layers to your winter wardrobe and experience the difference the next