I knew almost from the minute I took it out of the package that this product wouldn't live up to my expectations.
The foam is a fairly low density. After being installed for a couple weeks now, you can barely tell that it's even there.
When riding, I expected to be able to feel the bump as I slid back on the seat. That was not the case. Granted I'm a big guy, but I can't tell it's there at all when I'm on the bike.