Challenge yourself - or a friend! - to make each of the KAPLA structures pictured on the 12 challenge cards. Test your balance! Who can build it first? Includes: 12 challenge cards 16 natural planks Each card has a picture of a different KAPLA structure on it and you must build the picture that you see on the card. The cards are labeled 1-12 and become increasingly difficult as you go! KAPLA® is the original wooden building set made from 100% natural pine wood sourced sustainably from the Landes forest in the south of France. With its simple, identical planks, KAPLA® sparks creativity, imagination, and hours of open-ended play for children and adults alike — all while celebrating French craftsmanship and quality. The KAPLA CHALLENGE package measures 5x5x1.5 inches and weighs 11 oz.