Stacking Wooden Rings by Schylling Classic Wooden Stacking Rings for Baby & Toddler. 6 colorful wooden rings stack on the rocking base. Round ball topper Develops hand-eye coordination, shape recognition and color matching. Made with safe non-toxic paint, meets or exceeds specifications of European (EN-71) and American (ASTM) Toy Safety Standards. Ages 18 months & up.