A high-performing merino wool t-shirt from Arc’teryx, the prime merino fibres are wrapped around a nylon core for increased durability. Designed to regulate your temperature, with plenty of stretch and a silky handle which is good for all-day and longer wear in tough conditions. 87% merino wool / 13% nylon core spun jersey RDS certified wool Fair Trade Certified® Articulated patterning Large bird logo chest print Contains materials that meet bluesign® criteria Trim fit, choose your usual size Arc'teryx Men's Ionia Merino Wool Logo S/S Tee - Black