Light up your holidays with a merry Flashing Red and Green LED Elf Hat! This light up elf hat is perfect for holiday parties, parades, and plays, lending a festive touch to any event! Whether you're helping Santa give out gifts to the kids or adding an extra element of fun to the office Christmas party. hat is sure to be a hit with any crowd! Our green and red hat features four red LEDs that flash on and off. This hat comes with three type AG13 batteries included and installed. Our Christmas Elf Hat is sold by the piece.