Junior Polydron is made from super durable polypropylene and designed to allow easy construction of thousands of exciting models such as cars and planes. The pieces fits easily together and stays together. This 124 piece Junior Polydron Starter Set includes 15 Triangles, 15 Triangles with Hole, 30 Squares, 30 Squares with Hole, 12 Spacers, 4 Wheels, 6 Axles, 12 non-gender specific multicultural people figures and a Leaflet. Size of square 6cm. Age 3 years+.