This is not the seven dollar plastic chair you see at the local retailer! Mas stackable chairs are made by Dune Furniture as part of their living collection. The nice thing about the stackable chairs is there cool design. The legs are made of aluminum which combined with the polyurethane top create a colorful play between metal and plastic. Mas can be used indoors or outdoors adding to its flexibility. More information can be found on the Dune site.