Shark attack! Our LED Shark Fin Headband is the perfect accessory to your Halloween costume. The fin measures 4" across and 3" tall. Click the on/off button to switch through 5 different light modes: color morphing, fast flashing, slow flashing, blinking, and constant on. This LED Shark Fin Headband will hold securely on your head, adjustable, and will fit anyone. It’s lightweight and comfortable and will stay on during a windy day. 3 x AG13 batteries are included & installed. Sold by the individual headband. Please order in increments of 1 headband.