The Ski Karl top combines the best features of merino wool and synthetic fibers in Supernaturals signature style: merino wool is comfortable even when damp, making the roll neck excellent for alternating between activity and rest. It also reduces odor formation and minimizes the need for washing. Polyester speeds up drying and improves breathability. - Spacious fit, not body-contoured - Pleasantly thin 140g/m² fabric - Machine wash Like the other products we sell that contain merino wool, this shirt is also a "mulesing-free" product, meaning the painful mulesing method was not used in the production of the wool.