Billionaire Boys Club Black Field Guide Corduroy Bucket Hat Size S/M. The Field Guide Bucket Hat from Billionaire Boys Club makes a statement in any headwear collection. Cut from corduroy, the hat features an array of embroidered branding-inspired patchwork at the front, with a hidden pocket placed at the side. 100% corduroy Embroidered patchwork Hidden side pocket Style No: 821-5802