Glow in the dark, the future of bondage is here. Designed with an authentic bondage aesthetic, featuring glow-in-the-dark details that turn any occasion into a party. With Ouch! Glow in the Dark, the fun begins when the lights go out. The word NAUGHTY is reversed, so it appears on their skin. The Ouch! Glow-In-The-Dark products need to be activated by sunlight before enjoying the dark.