The stretchy textured rings tucked into this handy dandy set can be mixed, matched, or combined - but each functions very well on its own, too. Able to be stacked over the shaft, worn over you or their base and balls, or even used as a progressive ball stretcher, each Ring hugs tight to help maintain an impressive and add a little extra texture. In body-safe TPE, the Rings clean easily using warm soapy water or a good toy care fluid/foam. Compatible with any great quality water or silicone-based lube.*Rings stretch from about .75, .9 and .95”/1.9, 2.3 and 2.4cm