I think the foam in your average seat degrades over time and gets mushy. Also there are springs underneath that could lose firmness over time.
If these seats are for the saturn try looking for used low mile ones out of an SC2, the sportiest car. Has real stiff side bolsters and the foam may be tougher.
If these seats are for the saturn try looking for used low mile ones out of an SC2, the sportiest car. Has real stiff side bolsters and the foam may be tougher.