Stay comfortable and warm by adding an extra layer like the Minus 33 Women's Light-Weight Crew Neck Top to your wardrobe. Constructed with 100% 17.5 Micron Merino Wool, this thermal top also features 170 g/m2 jersey knit construction that helps lock in the heat to keep you nice an cozy all day long. For longer wear without irritation, Minus 33 added flat lock seams to prevent chafing. The Light-Weight Crew Neck Top is ideal for the spring, fall, and winter season. It's machine washable and machine dryable for easy care.