Nos Silicone Vibrating Couples Cock RingThis vibrating c ring lets couples sync their orgasms during PIV sex. The flexible inner ring features two raised pressure points that fit the penis snugly and promote a harder, longer lasting erection. At the same time, the two curvy extensions both house a rumbly motor, surrounding the clit in rumbly vibration. All that stimulation adds up to bigger orgasms all around.