Toddlers love the motion and sound of pounding the wooden balls throught the snug-fitting holes, then the fun begins all over again as the ball reappear below the play surface! Circular cutouts have tough vinyl rings inside holes to hold balls in place. Hours of problem solving fun! Improves gross-motor skills. Sturdy wooden construction with rounded corners and smooth edges, safe non-toxic paints with a clear finish. Raised base accommodates floor or tabletop play.