These are the "Blue" Glow in the dark Christmas Bulb Ear Rings. Can be worn during the day and then you can glow them at night if you want! Simply pull the top of the ear ring off and turn your bulb upside down to get your glow stick. Bend the glow stick and shake well! Replace and you will be the hit of any day or night in December, Christmas Parties and Christmas Day! Replacement glow sticks are available in our store. Please email any questions you may have. Thank You and have a Blessed Day!