Going to the course in this Johnnie-O Birdie Prep-Formance Polo Shirt in Lake. This Birdie Prep-Formance Polo Shirt by Johnnie-O features 3 buttons, side vents, embroidered logo center back yoke, moisture wicking, UPF 50 sun protection. This Johnnie-O Birdie Prep-Formance Polo Shirt is made of 93% Polyester, 7% Spandex.