A great little party piece here for the pranksters among you. These Glow Mouths are plastic holders you put on your tongue which case a mini glow stick inside. They emit an eerie glow everytime you open your mouth or even when you smile, which will fool & astonish all night long. Don't worry they are totally safe but recommended for ages 10 + only due to small parts. Glows for 6 Hours + Easy to Activate Ages 5+ (reccom 10+) Glow Stick Replaceable