FORTO F-15 Vibrating C-Ring - BlueThis textured silicone ring offers a thick band that is stretchy yet firm to wear at the base of the penis to offer larger, harder erections that can intensify the sensation of an orgasm. 10 vibration modes creates a new level of sensation for solo or partnered play, while the 100% waterproof design allows for use while in the bath, shower, pool, lake wherever getting wet happens.