The Caves is made from a Wicking Polyester/Spandex Double Jersey Blend that is comfortable on and off the course. Wicking Polyester/Spandex Double Jersey. UPF 50+ Sun protection. Contrast Inner Collar & Moon-patch. 1 x 1 Waistband Rib & Cuffs. Exposed Molded Zipper with Contrast Teeth. 90% Polyester / 10% Spandex. Machine wash and dry.