On or off the course, the proof is in the PREP-FORMANCE. Our light weight fabric is naturally smart - keeping you cool, dry, and protected from the sun.   92% Polyester / 8% Spandex Mélange Lightweight 1/4 zip pullover Signature puller Raised silicone logo at center back neck Moisture-wicking UPF 50 Sun protection Impo johnnie-O - Diaz PREP-FORMACE 1/4 Zip Pullover