evo.com | Smartwool Tank Tops > The Smartwool Merino Sport 150 Tank Top takes the Merino wool advantage to your warm weather activities. Made with the perfect blend of ultra lightweight stink free, sweat-wicking wool and polyester and a strategically placed body mapped venting system, this top is ready for the long haul. Back Panel / Side Panel 54% Merino Wool / 46% Polyester Ultra Light Ultra light fabric combines moisture management, temperature regulation, and odor resistance of Merino with the durability and quick dry time of polyester. Front Panel 56% Merino Wool / 44% Polyester Body Mapped Mesh Venting for Women Mesh in key areas to increase breathability and comfort. Athletic Fit | Women's Smartwool Sport 150 Tank Top 2019