The ultra-fine, flat back, racer mesh offers unparalleled breathability and superior cooling. PosiCharge technology locks in color, making this a fan favorite all season long. 100% polyester and moisture-wicking. Flat knit collar, taped neck and a tag-free label. 3-button placket with dyed-to-match buttons. Set-in, open-hem sleeves. Comes in black or red with white embroidered art on chest and sleeve plus white screen-printed brand name across the back. Weight: 3.8 ounces.