Dress up for the Sooners when you wear the Columbia Sportswear Men's University of Oklahoma Super Slack Tide Shirt. The 100% polyester fabric is lightweight, and the button-down collar adds a classy touch of style to your casual wear. The fabric is integrated with Omni-Shade™ UPF 40 technology, which offers protection from the sun. The sunglass cleaning patch helps you keep your shades clean, and the team design lets everyone know you've got Sooners pride.