This pin is perfect for shirt and jack lapels & collars and can also be used for hats, ties, backpacks and t-shirts! This 3/4" St. Patrick's Day shamrock luck pin is 24k Gold plated, features green inlay accents. The premium lock tight backing keeps the pin where you put it. This pin will stay in place even after a night of St.Patrick's day shenanigans! This pin makes a great party favor or bar give away! Also makes a great Lucky Charm all year round!