Product Description Your little one can get creative with the Build 'n Play Bag. This building bag includes 60 big building blocks made from plant-based plastic which is a minimum 90% biobased. The perfect fit for little hands, these big blocks fit together and come apart with ease, helping your little builders develop their fine motor and thinking skills as they stack. Best of all, these blocks can be combined with any MEGA BLOKS building toys to extend playtime for endless learning fun. First Builders building toys are designed for ages 1+