Bring a touch of vintage stadium style to your everyday look with this Boston Red Sox Patch 39THIRTY A-Frame M-Crown Perforated Flex Hat from New Era. The innovative A-Frame design combines favorite elements of the 9FORTY and 39THIRTY to create a comfortable, contemporary fit. Perforated mid panels add breathability, keeping you cool whether you're having fun in the sun or just cruising around town. This offers a modern, street-forward twist on a classic Boston Red Sox silhouette.