Built from our proprietary merino-rich 4-way stretch fabric, the Airblaster Merino Ninja Suit is the standard by which all other functional base layers are measured. With 55% Merino / 37% Tencel / 8% Spandex, our unique blend is 45% stronger and dries twice as fast compared to Merino alone. Airblaster use only non-mulesed wool from New Zealand and Australia, because sheep are people too.