Featuring the combination of Merino wool and Polyester, this hooded 1/4 zip can be worn as a base layer or mid layer option. Featuring the combination of Merino wool and Polyester. The Polyester helps to distribute moisture and enhances the airflow throughout the fabric. The hood design adds comfort and concealment that can be worn in the widest ranges of conditions. Naturally odor resistant and moisture control. Designed to be your base or mid layer of the system.