It's made of a 100% polyester high performance waffle knit designed for moisture wicking, so even as the dazed drivers whip by you, you can keep your cool in this men's shirt. The relaxed oversized fit allows for ease of movement. The yellow shirt has a left chest pocket with the Key bug logo that allows you to store your stuff. 

The bright, bold yellow color of this Key shirt lets others around you know you want to be seen. Its long-sleeve length makes sure your arms are totally covered. Don't just cross your fingers and hope people can see you...protect yourself and get noticed with the Key Men's 838 39 Yellow Enhanced Visibility Long Sleeve T-Shirt.