The ribbed open-ended design allows for increased stimulation as you thrust in and out. Inari's soft, luscious, lifelike lips are ready for action! The 2 by 1 inch egg vibe fits snugly in the bottom hole for powerful vibrations to heighten arousal. The multi-speed Power Pack for customized pleasure requires two AA size batteries, not included. However, for your convenience, Climax Personal Lubricant is included for some super slippery fun!