This is a building and sorting game where every top searches for its bottom part. Combine with other building blocks to create wonderful figurines. The Rainbow Mushrooms fit perfectly with the colours of the Rainbow (10700), 7 Friends (10580), Sorting Game Rainbow Bowls (42125), Wooden Balls (10239) and Sorting Helper (10298). 12 pieces in 6 rainbow colors. Materials: maple wood, non-toxic water based color stain.