This holographic Birthday Boy or Birthday Girl Badge is a great gift to add to any of our 3D Birthday greeting cards. It measures approximately 3" across and has an adhesive backing that allows it to adhere to clothing. Unfortunately, due to the temporary nature of the adhesive, it probably won't last but for a single wearing - or one birthday! It's great for kids and adults alike, allowing them to bask in the attention that a badge like this should elicit! What good is a birthday if everyone in your immediate world doesn't help you celebrate?!