I was at my wit's end, buying cushion after cushion trying to make my old chair work. I gave up and looked into new chairs, and when I discovered the Nouhaus Ergo3D I thought I may be onto something. I've had it for more than 2 months now and it has helped so much with my lumbar and sciatic pain. No more added cushions, just a really awesome chair! I recommend this chair to everyone who is sitting at their desks uncomfortable right now.