The possibilities are endless with the Wonderworld Rainbow Sound Blocks. Babies will learn sorting, matching and association skills. Looking through the blocks, children will see the world in different colours. The Wonderworld Rainbow Sound Blocks are comprised of wood and transparent multi-coloured plastic, and are filled with rattling beads that produce different tones when shaken. Wonderworld Rainbow Sound Blocks are the ideal toy for children who enjoy stacking and constructing objects. Your little one will love discovering the new and exciting sounds produced by this toy. Eco-Friendly: Made in Thailand from environmentally friendly rubberwood and strictly using Non-Toxic Paints, Dyes and Lacquers and Formaldehyde Free Glue. Packaging is made from at least 70% recycled paper.