This is a slim-fitting men's long sleeve top, ideal for layering in winter and cold weather, designed for comfort and a great fit. It is made from lightweight ZQ-certified merino wool yarn with an interlock knit for comfort, breathability, thermoregulation and natural odour resistance. Our thermal base layers are ideal for wearing underneath ski jackets, or worn on their own as a running top or casual jumper. The crew neck sweater features a flatlock seam construction and offset shoulder and side seams, designed to help increase comfort and minimise chafing. Complete your winter wardrobe and create a cosy thermal layering system with Smartwool's merino wool technology, for ultimate all-season comfort all day long.