Vibro-cock ring incl. batteries Removable vibro-bullet Very flexible and soft Box with a flap & window (not glued) incl. a cardboard tray Strengthens, vibrates and stimulates! The black cock ring fits securely around the penis, while the included, removable mini vibrator (ON/OFF button) provides stimulation. Ø 3.2 cm (very flexible). Material: silicone, ABS (bullet). Includes button cell batteries.