12 months & up. The Cube Chair has three uses in one! First use it as a chair with either a 6" or a 9" high seat. Then flip it over and use it as a table or a seat for adults. Our versatile 15" durable Cube Chairs are made of lightweight, molded, waterproof polyethylene, features safe rounded corners, and can be used indoors or outdoors. Measures 15" x 15" x 15".