The fan-favourite Classic Thermal Merino Base Layer Crew from Smartwool has been updated with a new fit, a slim fit to follow the contours of the body. The 100% Merino wool fabric is crafted with an interlocking knit to provide comfort, breathability and thermoregulation, so you stay at a comfortable temperature when embarking on your latest adventures. Flatlock seam construction and offset shoulder and side seams also help to reduce the effects of chafing or rubbing. Merino wool is also naturally odour-resistant, giving you peace of mind to enjoy even the most intense of activities. Smartwool Men's Classic Thermal Merino Base Layer Crew - Black | George Fisher