HUJ c-ring is our take on a basic ring most guys will want to use and use often. Our history shows this size ring gets used multiple ways. often more than one at a time. HUJ ring is a c-ring or a ball-ring. some guy`s stack them for more stretch or for more grip. HUJ c-ring has a groove inside the ring that flattens out when worn. this keeps the ring in place and keeps a bit of lube between the ring and the wearer for comfort. Our plus silicone TPR/silicone blend: silicone for a smooth and warm feel. TPR for amazing stretch and strength. Phthalate free.Dimensions:Width: 2 in.Height: 2 in.Depth: .75 in.Outer Circumference: 6 in.Inner Circumference: 3 in.