This T-shirt is made from a merino wool and nylon blend, combining the high breathability of merino with nylon core fibres for extra durability and added stretch. The fabric's moisture-wicking properties prevent sweat from building up when it’s hot, while still providing insulation on cooler days. With classic styling and all weather functionality, the easy-care men's Merino Air T-shirt is a year-round companion for days at the crag.