Mesh Circular Cushion Breatha

I use it at work. I bought this cushion because I was sitting for long periods of time and my lower back, buttocks and thighs were getting tired. My painful symptoms have improved dramatically. When I sit on a chair without this cushion, I feel a lot of pressure on my body. I like it because it's round and fits my office chair.

This is the first time I've used a low-rebound cushion, and I didn't expect it to be so firm and have such a strong rebound. It gives me a sense of security, more so than a squishy cushion. However, I feel that the part of the thigh that hits the cross-section is a little painful, and I wonder if the U-shaped type would have been better for sitting for long periods of time? The cover is washable, so I can sit on it every day in a clean, worry-free manner.