Size Large Color Olive From KUIU: Built from the lightest and toughest Merino wool in the industry, the ULTRA Merino 120 LT short sleeve crew harnesses all the natural performance benefits of Merino. It excels as a standalone hunting shirt in the heat, or base layer in the cold. The ULTRA Merino 120 LT answers KUIU’s never-ending challenge of reducing weight, while improving durability. KUIU partnered with Nuyarn® to engineer merino wool sourced from New Zealand that was lighter than the 125 g/m² predecessor, yet stronger. Merino wool as a natural fiber excels at thermoregulation and odor resistance, which are critical for long-duration hunts. Without sacrificing performance or comfort of the natural softness from the 17.5-micron fiber, the new 120 g/m² fabric uses a thicker nylon yarn core through Nuyarn technology, creating higher dimensional stability, improved regain, and added durability. The result is the lightest and toughest in the industry. Nuyarn Merino Wool 120 g/m² 70% Merino / 30% Nylon 17.5 micron New Zealand Merino wool 50+ UPF Sun Protection