I bought the Muut ergonomic saddle chair for my home office to help with lower back pain from sitting 8+ hours a day. After one month of use, here is my honest take.

Since I don't know exactly which product you tried, I have written a based on typical user experiences with their popular models (e.g., the Jumper , Salli , or Activa chairs). Title: Solid ergonomics, but adjustability takes time Rating: ⭐⭐⭐⭐ (4/5)

Get the extra pad for the seat if you have sensitive sit-bones, and definitely use a footrest if your desk isn’t adjustable. If you need a shorter, 1-sentence review for a store: "Finally fixed my lower back pain, but be prepared for sore leg muscles during the first two weeks – not a lazy chair, but a healthy one."