The Aeron doesn't fit everyone. I'm thin as a rail, and for me the front lip cuts into the back of my thighs quite uncomfortably. But it fits a collegue of mine

The Aeron doesn't fit everyone. I'm thin as a rail, and for me the front lip cuts into the back of my thighs quite uncomfortably. But it fits a collegue of mine absolutely perfectly. I think it might be a bit sensitive to weight ( or weight over area ) as well as length, which is why they come in three different sizes. But for some complexions none of the sizes might fit.