Keep warm and look fashionable this holiday season with Light Up Christmas Beanie Hat! Light Up Beanie Cap will delight and awe with a flashing, color changing light show during the next Christmas Eve Party, stroll through the park or while shopping for those elusive perfect gifts. Don't Be caught at an Ugly Sweater Party without your LED Beanie. To activate your LED Beanie Hat, remove the pull tab and flip the switch on the battery house.