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 a longer lasting durability. This model with balls stands 17cm (6.7 in) tall including the suction cup, has an insertable length of 12.5cm (4.7 in) and has a girth of 3.1cm (1.2 in).