Creating structures and ball run contraptions with KEVA Maple planks is not only fun, but educational. Builders gain first-hand experience with balance, leverage, geometry and the principles of physics every time they design, stack, adjust and construct. Build an entire city or an enormous sky scraper, create castles complete with stairs and turrets... or construct a ball run with slides, black holes, bounce plates and more. Your imagination is the only limit to what can be created with KEVA Maple planks.Details:11" x 9.3" x 10.5" package sizeContents include: 200 maple planks, 2 KEVA balls, full-color guide bookFor 1 or more playersMade in USABrand new condition in original packagingWipe clean with dry or damp clothFor ages 5 and up