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. A groove inside the ring that holds a bit of lube for comfortable wear and an inner ring that flattens as COG stretches so it stays where you want it...it will not roll or pinch. MATERIAL: plus+siliconeTPR/silicone blend DIMENSIONS: SMALL RING W:2"H:2"D:.5" OuterCirc:6"InnerCirc:2.75" LARGE RING W:2.25"H:2.25"D:.75" OuterCirc:6.75"InnerCirc:3.2