This 3-pack is the best option for customers that use c-rings often. History shows this size ring gets used multiple ways. often more than one at a time. HUJ ring is a c-ring and a ball-ring. Some guy`s stack them for more stretch or for more grip. Designed with flatter inner opening. this keeps the ring from rolling so it won`t snag or pinch. 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.