Our 3D Montessori First Puzzle consists of the egg and cup, the wooden box and cube and the wooden peg and ring. It is perfectly designed for a baby's hand. This set teaches hand-to-eye coordination, develops sensory understanding, strengthens grasping, encourages open-ended play and so much more. It is made out of natural beech wood and coated with transparent non-toxic water-based paint. Infants/toddlers must be supervised at all times when playing with these materials.