Nantucket is known for whaling, Nantucket Bay scallops, foggy weather, lighthouses, Main Street, Cisco Brewers, fantastic fishing, and iconic holiday events like The  Nantucket Stroll, Daffodil Festival, and the Rainbow Fleet. 

ACK is the Federal Aviation Administration's official three letter code for Nantucket Memorial Airport and is used frequently as Nantucket's nickname.

This hat is perfect for all who want to carry a little bit of ACK wherever they go!