The natural benefits of ZQ-certified Merino wool (moisture management, temperature regulation, and odor control) are combined with the quick dry times of polyester to create Sport 150 fabric, which is perfect for high-sweat, high-energy activities. On the Smartwool Women’s Merino Sport Tank, mesh is added in strategic areas to improve breathability and designed the top for freedom of movement and comfort. For anything from a HIIT workout to a training run, this tank can help you feel good.