Plan Toys Plancity Stone Bridge The Stone Bridge is compatible with PlanToys Road and Rail sets 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