Retro CoolMade of 100% cotton, the Oakley Mark II Tee salutes sports history. It carries one of Oakley's very first logos, a time-honored emblem from the early days of action sports. The look of retro cool comes in a regular fit with short sleeves and a comfortable crew neck design.Hydrolix Moisture ManagementStay cool, dry and comfortable with moisture absorption, wicking and accelerated drying time. Oakley’s exclusive O Hydrolix moisture management system functions throughout your performance.