The Rohan Merino Union 150 Long Sleeve is a technical baselayer engineered to combine the natural benefits of Merino wool with the durability and moisture-management properties of polyester. The fabric construction utilizes a blend that offers high warmth-to-weight ratio while maintaining natural odour resistance and breathability. Designed for versatility in varied outdoor conditions, it features a classic crew neck silhouette with flatlocked seams to reduce friction during movement.