The Easy Stack "n Sounds Blocks are a set of 3 oversized easy stack and easy grasp blocks that help strengthen baby"s fine motor skills! Each block has bright colors, textures and sounds for baby to explore with a different animal face featured on each ball. The weighted ball inside each block helps to easily guide the blocks and stack on top of each other. And baby will love discovering the unique rattles and jingles inside each block as they shake!