Stack is a cantilever and nestable stool with a simple, light-weight but robust structure. The whole structure is made of bent metal rod. The structure facilitates optimum strength using less metal, and at the same time makes this stool nest. The top seat is laminated with maple veneer. The maple footrest has been pierced to the metal structure. The footrest ends are crimped in order to get into the metal housing. After that, they get steamed, so pop back to its original diameter, allowing to fit tightly inside the housing.