It is back to basics with the Wonderworld Stacking Rings. The Wonderworld Stacking Rings toy is based on a classic design that promotes a child"s understanding of color, shape and size. The Wonderworld Stacking Rings are made of wood and include graduated, brightly colored rings. Your child will love spending time using these stacking rings, while unknowingly learning the concepts of problem solving. It is back to basics with the Wonderworld Stacking Rings. The Wonderworld Stacking Rings toy is based on a classic design that promotes a child"s understanding of color, shape and size. The Wonderworld Stacking Rings are made of wood and include graduated, brightly colored rings. Your child will love spending time using these stacking rings, while unknowingly learning the concepts of problem solving. Multi-colored Graduating stacking rings Six rings and one topping ball Wooden base stand Made from rubberwood, non-toxic water based paints as well as biodegradable fabrics 3.5 x 3.5 x 7.3 inches - 10.4 ounces