Add a classic look to your Arizona Diamondbacks game day outfits with the New Era 2-Tone Color Pack 9FORTY M-Crown A-Frame Adjustable Hat.The 9FORTY A-Frame design merges the front two crown panels into one, creating a high-profile pinched shape for a bold, unmistakable look that'll help you stand out from the crowd. COOLERA technology and MICROERA technology work in tandem to wick away sweat and reduce odor, making sure you stay cool, dry, and confident all game long.