If you take a 2.5 to 3 " hole saw to the seat bottom foam, which you can do without removing the upholstry and do not cut all the way through, you can pull out several cylinder shaped pieces. For me, the result was a softer and somewhat lower seat. I did it because the seat was simply too firm but sitting an inch or two lower was fine with me even though I'm only about 5'7" ( and getting shorter).