This 6-piece wooden stacking rainbow puzzle is a great versatile toy, representing the element of air. It can be telescoped and stacked in a variety of creative ways (examples shown). The pieces can be used together or individually as bridges, tunnels, seesaws, fences, houses or caves. Recommended by "Spiel Gut". Cut from solid Alder wood and colored with non toxic water based dyes. 6.75 x 3.4 x 2.4 inches. Age: 2 and up.