When the snow starts flying and the reading on the thermometer heads south there are several different base layer fabrications that perform well. However, there’s nothing that feels quite as cosy, or keeps you quite as warm as a superior pair of wool base layers. Our Natural 100% Merino Warm SUW is made from the finest-quality 100% Merino wool on the market. The 17.5 micron weight feels super smooth next to your skin and provides incredible all-natural heat and breathability. Of course, wool has long been a preferred alternative to synthetic fibers due to its all-natural anti-odor control. A fitted cut provides smooth layering.