The Fun Sorting includes four puzzle pieces that must be sorted and turned on the center rod to fit into the appropriate spot. The top part of the center rod can be twisted to create a more sophisticated play level. The center rod is foldable due to safety precautions. Develops fine motor and problem solving skills. Under the Green Concept Design PlanToys selects only manufacturers utilizing a minimal waste concept. PlanToys long-term commitment to social programs promotes healthy child development and environmental protection. All PlanToys are made using chemical free, kiln-dried recycled rubberwood and designed with water based non-toxic colors as accent. A small wooden playthings can produce big change. Through innovation and commitment to design excellence, PlanToys team of child development experts play a critical role in developing their selection of diverse wooden toys.