Pilsan Construction Set (Turkey). Everything is made of a rubber-like material. The pieces (except roofs) fold perfectly in half. The quality is normal, not perfect, but very good. Holds up well, well crafted. My complaints are more thematic. There, in every wall-piece, there are two doors on opposite sides. At the same time, there are only 8 roof parts (two double, four single and two halves), they can close only 9 wall parts (out of 20), i.e. It is assumed that the houses will be multi-storey. At the same time, there is no possibility to make a balcony. It turns out that the doors open into the air. Children like it because they really love building cities :)))