The Cliterrific vibrator has raised nubs along the top of the base that are pliable but firm enough for fantastic stimulation while bearing down on the vibrator. It is made from PVC rubber that is phthalate free and body safe. It features a powerful motor with three vibration speeds that are rotated through with a simple push button on the base. Waterproof so you can use this vibrator in the shower or bath, and it makes clean up easy because you can wash it in the sink without worrying about drowning it. Vibration requires two AA batteries that are not included.