From game-changing moments to crowd roars, the New Era Puerto Rico Bioluminescent Bay 9FORTY AF Cap keeps your look sharp and your spirit loud. A must-have for true fans, this cap features durable woven polyester that keeps you comfy, relaxed, and sharp from the first pitch to the final out. Own every moment and light up the stands with the New Era Puerto Rico Bioluminescent Bay 9FORTY AF Cap.