The rainbow is made of linden wood & consists of 7 pieces. Rainbow is 8.2 inches wide & 4.3 inches tall. 1.2 inches thick. These toys can be so fun, possibilities endless, while also being sustainable, made of natural wood. The pieces come apart, & you can make tunnels, bridges, mountains & so much more! Great for color recognition, puzzle making, imaginary play, the list goes on & on. Stackers are not recommended for children 2 years of age & under or for the “put everything in the mouth” group. Pieces could be a choking hazard if broken. KNOW YOUR CHILD & BUY ACCORDINGLY! Classic Rainbow Collection, Stacker Wooden Toys