Beautiful smooth solid beechwood nesting arches in the seven colours of the rainbow, with a natural finish to show the grain of the wood. The inner block is a solid 3D semicircle. Ideal for construction and imaginative play: to build sculptural structures; to design areas for filling with small world play people or animals; exploring size and scale; using mathematical terms - larger, smaller, taller, steeper etc; and improving language skills and broadening vocabulary to describe their activities in action. Size: approx. 19mm – 73mm high. Sizes: wall thickness 8mm x depth 40mm x arch heights 19mm, 27mm, 36mm, 47mm, 56mm, 63mm and 73mm respectively.