Classic building blocks with the bark removed in case you prefer a smooth finish. It has 21 pieces, each cut precisely in lengths of 2, 4, 6, 8 and 10cm. Blocks are one of the best long-term "smart-play" investments you can make. Creative, active, educational and fun. An open-ended, child-centric toy. The blocks come in a fabric bag. Wipe clean with damp cloth and air dry.