100% polyester front; 88/12 polyester/spandex micro sport mesh back; UPF rated sun protection; 2” wide high performance breathable reflective material; Brilliant Series Trim (reflective thread) down sides and around waist for added low light visibility; Black bottom front to keep t-shirt appearance clean and professional; Lower Inside: Microfiber patch for cleaning safety glasses; Left chest pocket; Heat-sealed label; ANSI/ISEA 107 2015 / ANSI/ISEA 107 2020 Type R | Class 2Fabric dye lot variances may occur and meet luminance factor as stated in the standard.; "CLICK HERE to watch product video"