AllwaySmart Kids Construction Building Blocks - Big Interlock Building Blocks to Build Symmetric constructions, Spinning Balls, Rockets, Reindeer , Motorcycles, Ship and Train. 150 Pieces Set ASTM certified safe STEM toy for kids ! Build symmetric construction with this innovative building sets ! Square, circular, rectangular, and curved interlocking blocks . Build colorful balls and watch them spinning. Fun! Build your own big reindeer and rocket for Christmas ! Fun building toy to build airplanes, robots , ships , motorcycles and more. Build and play with friends. Build armor helmets, crowns , swords , and magic wands and play together. Training kids' spatial skills. Perfect for building creative geometric and symmetric construction . 3 lbs of big durable ABS plastic blocks. 150 blocks. No choking hazard.