This product is two wooden disks that are glued to each other.
The purpose of this material is not to assemble and disassemble the disks as a puzzle, but to teach children to grasp both hands and pass the product from one hand to the other. This exercise is important for the development of both hemispheres of the brain.
In addition, this product can roll. Once the child starts to move more, it can push it forward and thus train its creeping.
One disc diameter: 6.6 cm, weight: 50 g.
The product is suitable for children over 4 months. 
