Breathable and durable, this hooded half-zip, long sleeve is carefully constructed with an intimate blend of CORDURA® /Merino fabric. Naturally anti-microbial, merino fights off odor-causing bacteria while wicking sweat away from your body. Perfect to wear in early season and spring as an exterior piece or as a base layer as the season progresses. Designed to be worn close to the skin, so if you want a looser fit, go one size up.