Show your partner how hard you can be and how long you can go with these erection rings. Unlike most cock rings. they are able to stretch out and fit just about any sized man for a more comfortable fit. Not to mention making it easier to put them on and take off. Each ring has a unique set of bumps for added stimulation while wearing. Each set includes three penis rings. each a different size and pattern. Size Inside diameters range from 0.8 to 1 inch