Cant adjust armrest. The massaging part doesnt massage but vibrates only. Got it for my husband and hes a pretty big guy. Its hard for him to spread his leg apart since there is a stopper on both side of the seating cushion. The seating cushion has a slant that goes up on each side of your thighs so it forces you to close your legs in together, or makes you sit the same way for a long time. Only reccomend for skinny people to sit comfortably. I rated it a 3 because its not so bad either. Comfortable enough, but a little irritated.