You can view or purchase the cushion here.
My work chair just hasn't been cutting it lately. I sit on my chair crooked and then jar my back and my sciatic nerve gets pinched. I do this a few times a year...
I purchased this cushion (at a discount price) and have been using it for a few days. It helps me sit normal and relieve the pinch.
It has memory foam and is a soft material.
*This product was purchased at a discount price for an honest review.