92% Polyester / 8% Spandex Treatment for smell control AFTCO Fish logo on chest AFBLOCK UPF 50 sun protection AFCOOL quick dry, fast drying The most popular sun protection shirt, the Samurai, is now available in a short sleeve. The Samurai logo is featured on the back of the shirt and made of the same material as the long sleeve samurai. A 92% Polyester / 8% Spandex blend. A great choice as a base layer under other outerwear options.