They are very uncomfortable. The first few minutes you're fine, but then you want to adjust the seat back - and can't. I'm 5' 10 3/4" 215 pounds, they weren't small seats but felt awfully tight in the upper body. Sides made your shoulders push forward a bit since they are just in a awkward spot (for me having a small waist/wide shoulders) for your arms to sit comfortably at your sides.
They aren't cheap feeling seats by any means - but man are they uncomfortable.