This rechargeable vibrating double c-ring helps you have stiffer erections so you stay harder, longer. The 10 vibration modes and super powerful motor is also sure to tickle your partner's fancy. This uniquely designed double c-ring is made of stretchy silicone for a one-size-fits-all. The smaller ring slips around the shaft and the larger one around the testicles, which may help reduce premature ejaculation. Completely submersible, this c-ring is the perfect companion for water play. One Year Warranty.