2-in-1 Tongue-Licking Double Penis RingTongue Licking Penis Ring uses 9 vibration modes and tongue licking stimulation to change internal pressure through the sleeve body. Tongue Licking Motion: Adds quicker, more focused stimulation near the opening for a more varied internal feel. Vibration: Adds an extra layer of steady stimulation alongside the main motion pattern. Product Details How it works: Tongue licking stimulation keeps motion focused near the opening, 9 vibration modes add more