Functional and works great as a set of any number.  These stools work perfectly for my kitchen island which is the standard 36 inch height.  The real wood means each stool's seat pattern is unique.

The center bar of the frame is a great for people who like to keep their feet off the floor when sitting.

One of the stools came with some piece of metal or a pebble or something inside the frame which I can hear rattling around any time I flip the stool upside down (which is rare).

The legs aren't quite even so the stools do rock back and forth only slightly, but this is nothing some extra foot pads can't fix if it really bothers you.

One of the plastic stoppers at the bottom of the metal frame was pushed half way into the frame and it's too tight to dislodge it without ruining the stopper.  

Generally I use these stools for socializing or quick bites, so because I'm not spending a lot of time sitting on them, these small issues are easily forgotten.