2 years & up. Encourage your children to engage in block play with this exciting Eco-Friendly Bright Colored Wood Patterning Builders. It?s easy to build and create with these colorful blocks! This set inspires children to build, stack, pattern, and sort while encouraging collaborative play and fine motor skills. Each block is made of eco-friendly rubberwood. These blocks store in their own wooden tray. Includes 48 pieces. Blocks measure 2.75".