Add to your baseball cap collection a headgear in a menacing look with this new drop from Prociety. Here is the Arizona Diamondbacks Inaugural Season Black Olive 59Fifty Fitted Hat. This cap comes in a two-tone look thanks to its black panels and olive for the button & the uppervisor. The front embroidery has the Arizona Diamondbacks logo, while the Diamondbacks Inaugural Season side patch is on the right panel. They added a neutral color by using gray for the undervisor of the bill. The New Era Flag is embroidered on the left panel, and at the back is the MLB Batterman. Get yours here.