This is an excellent open-ended 28 piece construction set in every way encouraging children to build their own masterpiece. The pieces easily slot together for children to build many different designs. Get creative by drawing or writing on the chalkboard surface.The perfect aid for multiple activities including developing fine motor skills writing creativity and problem solving. Natural wood on one side with a clear varnish and chalkboard on the reverse. Made from sustainably sourced birch plywood. Largest piece measures 24.5 x 15 x 0.9cm. Age: 2+.