The perfect cylinder "O" shape has been created in silicone for maximum pleasure and comfort. This ring delays ejaculation and enhances size and thickness. The Big O's phthalate-free, body-safe, glow-in-the-dark material keeps the bedroom aglow as long as you last. • Soft, Stretchable Silicone • Delays Ejaculation and Prolongs Erection • Enhances Size and Thickness • Glows in the Dark • Easy to Clean • Top Rack Dishwasher-Safe • Hypoallergenic, Nonporous, and Odorless • Phthalate-Free, Body-Safe