1st, I would call Roho in Bloomington, IL and ask them for the official word. Who knows there might be some hidden warranties that you haven't considered. There are too much factors in determining the lifespan, based on individuals. Best Wishes In a message dated 7/11/2011 10:43:58 A.M. Central Daylight Time, [email protected] writes:
How long does a Roho cushion last? After many years on foam, I switched to a Roho about three years ago. Now I'm feeling like maybe it's time for a replacement. Any thoughts about a reasonable life expectancy for a Roho seat cushion would be much appreciated. – Ben Mattlin (SMA)

