These blocks are guaranteed to turn children into Builders! Large open bases provide stability when building structures and allow for children to create places and spaces for small objects and figures to be played in. The blocks are constructed of Western Red Cedar and will withstand our intense climate and children. A set of 9 includes: 2 triangles, 2 small squares, 2 medium rectangles, 2 small rectangles, and 1 large square Dimensions: Small Square- 23cm x 23cm Small Rectangle- 23cm x 30.5cm Medium Rectangle- 30.5cm x 40cm Large Square- 40cm x 40cm Triangle- 42cm x 31cm x 60cm