Introducing: M2M your prime source for luxury leather gear and pleasure toys for ultimate man2man satisfaction: products designed for gay men by gay men since 2006. A simple plan to service the gay male market. M2M is still, after 12 years, the only brand with the courage to show two gay men on the front of the package. The brand connects proudly and quickly with the gay consumer. M2M Nitrile Cock Ring Dark Blue 3 Piece set. Nitrile is the same material used to make gloves for emergency room doctors and nurses. Why Nitrile? Because Nitrile is 100% skin-safe and hypoallergenic. Nitrile is also compatible and safe to use with all types of lubricants. Nitrile is stronger and holds its shape better than latex or rubber and it stretches slightly to achieve maximum constriction without sacrificing comfort. Nitrile is available in a wide variety of colors, sizes and thicknesses. If you are looking for an inexpensive and versatile cock ring, nitrile is the perfect choice. Why use a Cock Ring? The role of a cock ring is to provide constriction, this constriction slows the flow of blood from the erect penis creating an erection that not only lasts longer but is also thicker and harder. Prolong rings helps prevent early ejaculation.