I have that same cushion from Relax The Back store with the cut out sections so your tailbone is not compressed. Also it is a wedge shape which is just the perfect angle for my hip joints to be comfortable. I actually have 2 cushions one for my car and one for my chair at the dinner table. Best things I ever bought.
“I actually have 2 cushions one for my car and one for my chair at the dinner table. Best things I ever bought.”
I had one for my car and one for my chair. We also had two for my husband. He is gone now, so I have two more, use one at dining table and one on my desk chair. I can’t do without them.