Smartwool uses the natural properties of merino wool with an added techy boost from synthetic fibers to make the Active Mesh Hoodie. This casual pullover is perfect for more active days, thanks to the smart combination of fibers. At the front body, merino wool and Tencel provide ultimate next-to-skin softness and intuitive temperature control. On the sleeves, shoulders, and back, a mesh-like material with recycled polyester offers airflow and wicking, plus all the previous benefits.