FXR Racing - All the right tools you need to fuel your Full Throttle Addiction. 160 gsm 91% polyester / 9% Spandex jersey. Lightweight polyester / Spandex vented mesh side and sleeve inserts. Longer sleeve length. Droptail for increased coverage when riding. Anti microbial and DWR finishes. Sunshield™ 50+ UPF rating.