Show off your Arizona Diamondbacks pride this coming season with the 2025 Batting Practice 9SEVENTY Stretch-Snap Trucker Hat from New Era. The 9SEVENTY provides a modern adjustable fit and versatile style with its structured crown, semi-curved visor and performance stretch sweatband. This Arizona Diamondbacks hat features COOLERA technology to wick away sweat and MICROERA technology to reduce odor.