One of our most versatile pieces in the collection. The Tahr Collection can be worn as a base layer or when the weather gets warmer, it is perfectly suited for a great, lightweight exterior piece. Breathable and durable, this half-zip, long sleeve is carefully constructed with an intimate blend of CORDURA® /Merino fabric. Naturally antimicrobial, merino fights off odor-causing bacteria. One piece, year-round wearablity. Designed to be worn close to the skin, so if you want a looser fit, we recommend going up a size.