Eco-Friendly Concrete Furniture and Decor by Bentu Design. The side table and stool set, Bu (or “not”), are made of raw beech wood and one’s choice of a natural or pigmented concrete. Each stands on four wooden legs, jointed with a mortise and tenon, and is finished with a concrete tabletop or seat, connected with a screw. Read more: http://blog.gessato.com/2015/04/28/eco-friendly-concrete-furniture-and-decor-by-bentu-design/#ixzz3YkC2R0DQ