Funny Party Hats ST Patricks Day Hats - 12 Pack - ST Patricks Day accessories - Shamrock Party Hat - Saint Patricks Day Party Hat is made from plastic and measure 10 inches. This set is a 12 pack. Derby Hats With Gold Shamrock Print. Hand out these metallic Leprechaun hats to all your guests! Turn them upside down and fill them with party favors such as small toys and candy. Add a lei and noisemaker for extra fun at your St. Patricks Day party! Wear this to St Patricks Day Parade and stand out!