Although it may look like cotton, Brooks EZ T III is made with moisture wicking,quick drying performance fabric that's odor resistant, too. Supersoft polyester fabric with a cotton look. Classic Brooks logo screen print on front of shirt. Stretch fabric for range of motion. Moisture wicking and quick drying. Odor resistant. Frontback 3M Scotchlite retroreflectivity reflects light back to the source with minimal scattering for high visibility during low light hours. Flatlock seams prevent chafing. Double color dipped for richer, more masculine color. Semifitted: Contoured to the body.