Illuminate your darkest pleasures with this glow-in-the-dark cockring set! The rings are infused with non-toxic glow powder, which gives off a colourful, visible blue light after dark. The rings can be worn around the penis, balls or both simultaneously. Using a cock ring will restrict blood flow to the penis which results in providing the user with a fuller and harder erection. The soft and supple material allows the rings to accommodate all sizes. The rings should be exposed to light during the daytime for the best glow effects at night. Wash with warm water and mild soap. Made of body-safe TPE Infused with non-toxic glow powder Can be worn around the penis, balls or both All rings have an inner diameter of 16 mm.