Best Use: All Conditions Developed in New Zealand, Nuyarn technology has revolutionized the Merino wool market. Taking the twist out of the yarn has produced a fabric with higher stretch and recovery, better moisture management, and greater warmth. It is stronger than the average Merino wool on the market, yet boasts the same natural odor resistance and comfort. KUIU's ULTRA Merino 145 is a lightweight, incredibly comfortable, and durable blend of wool and nylon providing a next to skin or layering option for the highly active hunter. The ultra fine 17.5 micron Merino wool takes the edge off in cool conditions, while eyelet knit side panels provide maximum breathability. The Zip design adds heat release and ventilation capabilities while the stand collar adds to its comfort and concealment.