The Fish and Pig are available in two sizes and can be stacked.
The low one is for the child who has just learned to sit. The big one is for the older child, and stacked, they fit teenagers and grown-ups.
It has a size that enables the child to sit on it while in movement, which enhance not only the balance but also the joint senses.
Children can lie across them and have both the backside of their bodies and their arms strengthened.