A crown of champions! The New Era Diamondbacks 9FIFTY AF Curve World Series Cap keeps your loyalty stitched in and your style locked down. Made from durable woven polyester, this cap offers a breathable, comfortable fit that moves with you, whether you're in the stands or reliving every World Series highlight. Rep the D-backs with pride and make a bold statement wherever the game takes you with the New Era Diamondbacks 9FIFTY AF Curve World Series Cap.