28 super soft safe play forms sized for 6 months old thru 2's. Expanded vinyl encased foam shapes with hook n' loop attachments to fit together in increments of 5, 10, 20 and 30 inch modules. Provide them room and let tiny architects shape their gross motor parameters. Simple shapes encourage never ending play possibilities. For some stationary seating, add the into the mix. Or find some individual pieces amongst our collection.