A Giant Rainbow Splash Number 4 Balloon let's everyone know what big milestone event you are celebrating! Whether you are hosting a fourth birthday party or four year anniversary this rainbow splash number balloon is the perfect fit. You can combine this rainbow number four balloon with other numbers for a trendy custom look at birthdays, graduations, and New Year's celebrations! The metallic finish of this foil balloon makes it an eye-catching addition to the photo booth background at your event.