The uVIBE U-RING is a super-safe, stretchy enhancement ring designed to comfortably fit all sizes and help maintain a firmer and fuller erection during sex. The added pleasure knobs help provide a tighter and more secure fit. By constricting blood flow and keeping blood in the shaft of the penis, the specially designed U"¢RING helps to keep the erection harder and firmer for a longer period of time. Users will also experience a more powerful orgasmic release while using the U-RING.