This Arizona Diamondbacks Black Cooperstown New Era A-Frame Snapback Hat hat features a sturdy A-frame construction, providing a comfortable fit and structured silhouette that stands the test of time. It's a 9FORTY A-Frame hat and a pre-curved bill. These 9FORTY hats have a front profile that's a medium depth, falling slightly lower than your 9FIFTY A-frames. The brim also features a more distinct curve.The back has an adjustable snap so you can get the perfect fit.