Has really made a difference. My back doesn’t hurt anymore for standing long periods of time
The cushion adds some, well, cushioning to the seat, but I’m not convinced I actually need that. The suspension on the Ergo makes the original seat “softer” already, in addition to the slight “give” in the surface, and the hardness of the original seat is actually very supportive and not so “hard”. This may sound confusing, but all to say that the original seat is enough for me and I’m amazed that it is enough given how sturdy it is. The Ergo is perfectly designed to give just enough yield to be supportive yet not harsh. So as a final conclusion, the xtra seat cushion is fine, and some people may want or need it (it works well and straps down tightly), but I think it clearly is an “extra” for a select few rather than something that is needed post design and production to address any issue.