5 Pcs WOODEN STACKING BOWLS- MONTESSORI RAINBOW TOYS These pair well with other toy sets for building structures but are also terrific on their own! Your child will learn that the size order of these bowls is also rainbow color order. This will be helpful for them when they go to stack them to make a tower and then want to nest them back together. The bowls can also be used to hold trinkets or aid in various imaginative play scenarios. Use them as dishes with toy food or to help create buildings with other blocks. * Materials: Bass wood and water based - non toxic paint.