Bottle Opener Caps - Beer Baseball Hats With Built In Bottle Opener. Your favorite beer brands bring you this huge selection of bottle opener hats that are perfect for bartenders and party goers alike. Open your beer on your brim! Each of these hats features your favorite beer brands official logos and insignia and feature unique bottle openers on the brim! Never go with out a bottle opener again. If your wearing your hat, you have a bottle opener!