2 years & up. Introduce early math concepts like color recognition and counting with the 1 to 5 Ring Counter. The color-coded numbers on the base assist children in successfully placing the corresponding rings. As children place the rings on the posts they will practice their fine motor skills and hand-eye coordination. Each counter measures 1 H x 1.5 D. The entire product measures 9.5 L x 2.5 W x 6.5 H.