Material | 52% Cotton, 48% Polyester. Color | White. Colosseum men's short sleeve OHT t-shirt with screen printed Seminole Head Florida State design. OHT (Operation Hat Trick) branded merchandise generates awareness and support for the recovery of wounded service members and veterans. 10% of this purchase price supports Operation Hat Trick's mission to assist American service members and veterans as they recover from the visible and invisible wounds of war.