The Sierra t-shirt is made from a lightweight merino wool blend. It combines the temperature-regulating and odor-resistant properties of merino wool with the quick-drying performance of polyester. The Sierra 140 Tee is an excellent choice for everyday wear, hiking, and various sports activitieswear it as a short-sleeved base layer or as a comfortable t-shirt on a summer day. - Slim fit design, narrow cut - The fabric weight is a light 140 g/m², suitable for summer use - Machine washable at 40°C, do not use bleach or fabric softeners Like all of Scandinavian Outdoors merino wool products, this shirt is mulesing-free, meaning the painful mulesing method has not been used in the wool production process.