Size 1.75 inches outer diameter, 1.5 inches inner diameter, 0.5 inch in width. The Performance Silicone Go Pro Cock Ring is a soft, stretchy ring crafted for maximum comfort. The flat design fits around your shaft for no slip performance. The Go Pro is body safe, hypoallergenic silicone features a satin smooth and a multi-colored design. It is easy to clean. Just wash with soap and water and let air dry.