This the *only* cushion I have tried that actually provides lift at the sits bones. Over the years I have tried inflatable tube shaped supports (ok but started leaking after a while), rolled up towels (hard!), and a couple different ergonomic cushions. The cushions were fine but just don’t provide the slight forward tilt needed to provide a nice natural curve to the spine. I also like that the “integrated skin” over the foam doesn’t collect dust, pet hair, etc. And the foam is quite sturdy, but not so hard as to be uncomfortable. Really thoughtfully designed.