Enhance your erection and pleasure your lover with TPR stimulator cock rings. You'll stay hard longer and provide additional sensation during sexual intercourse. Three purple rings - in various sizes - included for a hard on that lasts all night long. Do your penis a favor and slip one of these on the next time you have sex.<span style="font-family: arial&#44; sans&#44; sans-serif; font-size: 13.333333969116211px; white-space: pre-wrap;"><br /></span>Diameter: 0.75&rdquo;/2 cm (small)&#44; 0.85&rdquo;/2 cm (medium)&#44; 0.9&rdquo;/2 cm (large)