COG rubbery c-rings are a 2-piece pack of 1 small 1 large COG c-ring in one pack. COG is designed for guys that like a heftier super-stretchy c-ring. the set allows the user to wear the size that gives the right grip for play. or use one as a c-ring and the other as a thick ball-ring. The knurled surface texture looks cool and feels amazing...at hünkyjunk we love the details! A groove inside the ring holds a bit of lube for comfortable wear and a inner ring flattens as COG stretches so the toy stays where you want it...it will not roll or pinch. Our plus silicone TPR/silicone blend: silicone for a smooth and warm feel. TPR for amazing stretch and strength. Phthalate free.Dimensions:Small RingWidth: 2 in.Height: 2 in.Depth: .5 in.Outer Circumference: 6 in.Inner Circumference: 2.75 in.Large RingWidth: 2.25 in.Height: 2.25 in.Depth: .75 in.Outer Circumference: 6.75 in.Inner Circumference: 3.25 in.