The DripDrip Bath Toy from Fat Brain Toys makes bath time oh so fun! Designed for ages 3 years and older, this toy turns your bath tub into a waterworks laboratory! Just arrange the 4 suction cup rings to your bathroom wall, one above the other, and then place the 3 reservoirs and propeller into the rings in any order you want---then add water and see what happens! Dishwasher safe, highly durable, exceptionally safe for baby. Cups each measure approximately 3.75" x 3.75" x 3.5".