100% spun polyester. Soil-release finish, three button placket with matching buttons, left chest pocket, hemmed sleeves, even hem bottom, unisex styling. White (775) and Light Gray (660) available in 50% cotton/50% polyester only. US Colors; 775 White, 623 Burgundy, 560 Light Blue, 565 Navy, 660 Light Gray, 037 Hunter, 505 Black. Canada Colors: 775 White, 623 Burgundy, 560 Light Blue, 565 Navy, 660 Light Gray, 585 Royal Blue, 505 Black.