There's truly nothing like this hat. Get ready to illuminate the night this Halloween... Literally! This hat lights up in a way that looks like real-life jellyfish tentacles are shimmering around your head. The colorful LED lights will surely make you stand out wherever you go. From futuristic aliens and bioluminescent creatures to fantasy sea witches and sea life, you can adorn this hat for a wide array of Halloween costumes. You can even go as the great deep ocean blue. Just attach various fish to your outfit for a realistic look. Get ready to turn heads as you trick-or-treat.