This Guinness Dublin Opener Cap is the perfect cap for St. Patrick's Day or any other occasion. Guinness Dublin Ireland patch is sewn on front with Guinness pint, Estd 1759. Bottle opener is under the brim with a stylish bottle cap on the visor with Harp logo. The bottle opener is securely screwed into the bill of the cap, to ensure it will last a lifetime of uses. Adjustable plastic closure. Black/White. One size fits most.