Between 4 and 7 months
Dolio's shapes are easy for a child to grasp. It stimulates prehension and handling. Moving parts encourage children to shake the dolio, developing greater control of their hands and arms. Hand-to-hand transfers are encouraged.
Children discover their own hands and can grasp and move in a more focused way, encouraged by practice.
The mouth is the most sensitive part of a child's body, which is why they tend to put everything in their mouths. Of course, the dolio was also designed with this in mind.
