Now walk carefree even in mild showers the Regatta Men\'s Kioga II Showerproof Short Sleeves Shirt is made with a blend of polyester and elastane a classic Isoflex fabric. The durable and flexible short sleeves shirt features a collared button-down front with a water repellent finish. The shirt comes with back mesh ventilation and a zippered chest pocket to complete the look., 96% polyester 4% elastane - ISOFLEX., Durable water repellent finish., Back mesh ventilation., Zipped chest pocket.