HomeFoam Half Moon Stacker Foam Half Moon Stacker Rate This Item... $14.95Chenille Kraft • Product is No Longer Available • 87853QuantityAdd to Cart About3 years & up. Teaches size relationships. Put the smaller pieces in first, slowly build to the tip, and back down again. Includes foam base with 14 color graduated sleeves. 6"H x 15"W x 3"D.