This penis cock ring is designed with 10 vibration modes. you can adjust it to meet your demand for stimulating sex. Double rings can not only holds its place but also slow the blood flow to make your penis harder and last longer. The size is suitable. you can use it with your partner. the top of ring can stimulate women's clitoris. gives your partner an intense pleasure. In addition. it's waterproof and you can enjoy it when taking a shower. Safe. comfortable. pleasure. you worth to have a try!