Here ye! Here ye! Wear this LED King Crown for Mardi Gras celebrations or any day of the week that you want to feel like royalty. To activate your LED King Crown, press the small grey button the side of the hat and activate one of THREE functions: Fast Flash, Slow Flash, Steady Light. LED Colors: Green Hat Colors: Purple, Gold with Black and White Height: Approx. 9″; This is a large hat. One size fits all. LED King Crowns come ready to use with 3 replaceable AG13 Batteries.