Has anyone else with lower back pain tried out the cushion from Gentle Fields yet?

Has anyone here actually tried the Gentle Fields cushion? My lower back has been bothering me for months now, and sitting at my desk all day definitely doesn't help. I've gone through a couple of cheap cushions from Amazon that felt great for a week and then ended up collecting dust in a closet. I keep seeing people mention Gentle Fields, and I'm wondering if it's genuinely helped anyone or if it's just another overhyped cushion. I'm not expecting miracles, but even being able to sit through a workday without constantly shifting around would be a win. If you've used it, did you notice a real difference? Was it comfortable for longer periods, and do you still use it regularly? I'd love to hear some honest feedback before I pull the trigger.