Kuiu PRO Merino 200 Zip-T Size Large Color Steel Blue From Kuiu: The ½ zip design allows for added heat release and ventilation while reinforced thumb holes keep the sleeves in place when adding a layer.The PRO Merino is a great choice for the hunters needing a versatile hardwearing shirt that is useful in a wide range of conditions. PRO Merino is the result of years of development with TMC and a breakthrough in mid-layer technology. The dual-layer knit construction positions 17.5-micron Nuyarn Merino next-to-skin with a quick drying, durable polyester eyelet outer face. The Nuyarn wicks moisture away from the skin and it passes through to the surface of the Polyester. The Polyester distributes the moisture over its surface, while the eyelet construction speeds the process and encourages airflow within the fabric. This moisture management is a mechanical process, and results in a piece that absorbs, disperses, and evaporates moisture 4x faster than pure merino or comparable weight blends. Stand-alone shirt, base or mid layer Naturally odor resistant Anatomical shaping for fit and comfort Reinforced layered thumbholes 1 zippered chest pocket Spandex-free stretch Durable and resilient Thermo-regulating Highly breathable Flat lock seams Merino next-to-skin for comfort, odor control, and moisture wicking Polyester eyelet outer surface for 4X faster dry times 17.5-micron Certified New Zealand Merino Wool YKK Zippers 200 g/m² fabric weight