The Performance Silicone Glo Pro Cock Ring is a soft. stretchy ring crafted for maximum comfort. The flat design fits around your shaft for no-slip performance. The Glo Pro`s body safe. hypoallergenic silicone features a satin smooth glow in the dark design. It`s easy to clean: just wash with soap and water and let air-dry.Dimensions:Outer Diameter: 1.75 in.Inner Diameter: 1.5 in.Width: 0.5 in.