Boston Drinking Cap Strapback Hat Bottle Opener Liffey Irish Ireland Black NWT Boston Drinking Cap Strapback Hat by Liffey Artefacts is a stylish and functional accessory for men. Made of 100% cotton in a solid black color, this baseball cap features a unique built-in bottle opener on the brim. Designed with an adjustable hook and loop closure, this hat is perfect for casual outings, tailgates, or St. Patrick's Day celebrations. Proudly made in Ireland, it features white embroidered text and a green shamrock detail for a touch of Irish flair. #Casual