90% POLYESTER, 10% SPANDEX. UPF 50+. MOISTURE-WICKING POLYESTER AND SPANDEX STRETCH BLEND. DOUBLE JERSEY KNIT WITH MULTI-DIRECTIONAL STRETCH. COVERED PLACKET WITH REVERSE-COIL ZIPPER WITH ZIPPER GARAGE AND CONTRAST COLOR STORM FLAP. F&G LOGO ON ZIPPER PULL.