This RealRock crystal clear model has been designed with realistic balls for an enhanced lifelike experience. All come with a sturdy suction cup so you can stick it to practically any smooth surface. All are body-safe and non-porous which makes them easy to clean and gives them longer-lasting durability. This model with balls stands 17cm, 6.7inches tall including the suction cup, has an insertable length of 12.5cm, 4.7inches.