Augusta Sportswear Boys' Flyball Baseball Jersey 100% Polyester 100% polyester wicking knit body * 100% polyester printed wicking knit inserts on some colorways * 92% polyester/8% spandex wicking pinhole mesh back and inserts * Wicks moisture away from the body Heat sealed label * Self-fabric collar * Back, bottom of sleeves, and side panels are pinhole mesh for added breathability * Contrast piping in collar * Set-in sleeves * One-button placket * Double-needle hemmed sleeves and bottom Baseball