The functionality and comfort deserve 4 stars, however, I gave it two because of the assembling process. The illustrations in the assembly instructions could have been more detailed.  The pictures in the assembly instruction were so poor that it was hard to orient which way a part is to be installed in relation to another part.  The parts of the chairs were not all marked as they should have been. The hardware for the chair did not differentiate or mark which bolts/screws were to be used for which part of the installation.  I ended up using the wrong bolts/screws for the swivel base on one chair. Putting one chair together was very frustrating for me.  We love our chairs and table, but the instructions need much improvement.