Made for hiking and trail running, the new Norrona bitihorn wool shirt is a light weight and technical long sleeve with an athletic fit. The comfortable shirt mixes the best of two worlds; polyester increases its durability and ensures it dries up quickly, while the wool will regulate your temperature and has naturally antibacterial and odor resistant properties. To provide maximum air flow we have placed mesh in the most efficient moisture transporting areas such as the back, chest and under arms. The shirt can be worn by itself or used as a base layer. Keeping you warm on freezing ascents and lowering the temperature during hot summer days, it is the perfect base for everyone who loves high intensity activites.