The PlanToys Stacking Ring improves fine motor skills and a child's ability to categorize, count, stack and recognize various sizes and shapes. This set is great for incorporating into classrooms or educational play environments! It features 1 base, 6 wooden rings and a ball for hands-on play. Sustainably made in Thailand using chemical-free rubberwood, formaldehyde-free glue, organic pigments and water-based dyes.