Really like the chair! My dad has an AKRacing chair and it is extremely comfortable. He said it has helped a lot with his back pain. I ordered this one even though I was on the edge of XS/S at 5’3” (per the guidelines on the site, not the product description; they say different things) because it was on sale. I think it fits me nicely, but would be curious to sit in a S to compare. After one week of use I can say its a drastic difference compared to my old office chair! Very comfortable, fewer knots in my back/shoulders, and actually helps me be more productive because it doesn’t interfere with my attention span lol. (I’m not thinking about the chair, I’m thinking about work!) Highly recommend for long periods of sitting and the aesthetic design is very sleek! As stated in other reviews, though, the lumbar pillow is too big for me and it would be better for posture reasons if the armrests could move closer to the body; they are too far apart to be useful.