As some said, the instructions could have been a bit clearer, but if you read them in full before starting, it helps makes sense of the process.  My 40 yo daughter and I at age 65 assembled them without any challenges (except when I put one arm on upside down - my error, caught before the 2nd arm on that chair and was icily remedied).  The chairs are comfortable.  We wanted high back chairs so we didn’t slump into cushions.  The chairs gently rock, just enough to keep a good rhythm.  They swivel, but only when you are seated in them, which is a good thing.  You don’t want them to spin if there is a strong breeze.   Very happy with our choice.