Tank top in Russell's Essential series uses their Dri-power technology fabric with moisture wicking and odor protection features to help keep you cool, dry, and fresh. UPF 30+ sun protection. Colby Mules, Established 1813 (Colby's establishment year), and a Colby Mule are imprinted on the tank top front in school color blue. Russell Athletic logo at the lower left hem. 60% cotton, 40% polyester.