Kids at 6 monthes and up can recognize shapes by putting colorful blocks on top of each other. This Fun toy includes 7 pieces. The full set is made of plastic material. Five multi-colored durable plastic rings fit over cone in sequence from big to small. It teaches size and sequence as the baby learns to put the rings on the base in the correct order. Its textured surfaces are for tactile development. The brightly colored rings stimulate visual perception.