9FORTY AF TRUCKER MLB DIAMOND ERA NEW YORK YANKEES cap with a structured 5-panel crown and side mesh panels perfectly copies the shape of your head. The back panel is open and it features an adjustable snap. The front part of the cap features a club logo. This T-shirt is a universal piece you can wear to work as well as for a night out, don’t you think? Irresistibly stylish must-have by New Era.