• 142-PIECE CITY AIRPORT SET: Build your own airplane, helicopter and control tower with this cool PolyM set! Includes three rotating bricks which allow the helicopter blades and airplane propellers to spin • ENDLESS BUILDING POSSIBILITIES: Use the instructions to make the aircraft and tower shown on the package. Recombine the blocks to make other creations • SOFT & FLEXIBLE EDGES: Building blocks are made from a flexible material and have soft edges that are kind to children’s hands • BUILD & LEARN: Endless building options of the set stimulate your kids' imagination and creativity. They will develop both logical thinking and problem solving skills when they place and adjust the different shapes to make them all fit • SAFE TO PLAY WITH: The material (Polyethylene LD-PE/HD-PE) is machine washable, 100% non-toxic and safe for kids