Learning to grasp and sort shapes is a favorite activity for babies. Now it’s combined with another favorite—blocks full of fascinating discoveries! Sort Peek-a-Blocks™ shapes through the appropriate openings, with rewarding music and sounds. Drop all the blocks in the center and carry them along, or practice stacking and building! On the bottom there’s an indent for each shape that baby can match the block to. In good used condition but does show play wear like scratching/marks to the clear plastic. Missing the cylindrical block, but can always substitute a ball of the correct size. The sounds work when something is dropped to the bottom, so really anything that fits will work! For some reason, the sound only works on the medium volume setting, not on the high volume setting. Which isn’t necessarily a bad thing lol. Will need new batteries (3 AA’s)