One 34 inch Green Whistle On a Chain. The handy beaded chain makes it easy to keep up with your noisemaker during the game or while you're chasing the kids around the yard. Use your Green Whistle On a Chain to fill treat bags, or hang them around the party area for everyone to grab. A Green Whistle On a Chain is also perfect for rounding up kids in the neighborhood when you need them to come home. Great for St. Patrick's Day, too!