This tee is great for workers in dangerous jobs like construction or road maintenance. It's for anyone who needs to be seen clearly for safety. It's made of a lightweight 4.1 - ounce, 100% polyester birdseye mesh. With a 1x1 rib knit neck and a back neck tape, it's comfortable. The 2 - inch segmented reflective tape on the body gives you 360 - degree visibility, and there's a left chest pocket for convenience. It's not an ANSI - compliant product, but it's still very useful for safety.