Kids can build a fort, a playhouse, or a grand sculptural monument in the living room. The Spaceframe modular system allows endless possibilities for expression. It is made of a unique polyester material that is completely safe for children, and 100% recyclable. The Spaceframe is a new dimension in building blocks that appeals to children of all ages. It's designed by Scott Klinker. The set includes 20 pieces. It's an award-winner that debuted in 2005.