This three-pack of The Gasket thin circle cock rings are made from super stretchy silicone to fit perfectly and enhance your size and thickness. They're dishwasher safe and completely phthalate-free and body-safe. Soft, Stretchable Silicone Delays Ejaculation and Prolongs Erection Enhances Size and Thickness Easy to Clean, Top Rack Dishwasher-Safe Hypoallergenic, Nonporous, and Odorless Phthalate-Free, Body-Safe