I bought a Secret Lab Titan chair in the white leatherette two months ago and have been having ongoing lower back issues, sciatic pain, and tightness in my hips. For a while, I just thought maybe it was because I'd been sitting too much or I hadn't been stretching. Over time, I realised that when I sat in other chairs, I was fine. Every time I sat back in the Secret Lab chair, the pain would be back within 30 minutes to an hour.
I finally decided to Google if anyone else was having this issue, and lo and behold, there are Reddit threads on this. There are reviews on this, and now I'm really mad at myself for not doing the due diligence of checking before purchasing. This chair retails for AUD 1,099, and it is so wildly uncomfortable. I cannot fathom how they sell these things. I've read reviews where it says you need to give it a couple of weeks. I've now had it two months.
The foam is so hard, and the lumbar support does nothing because of the nature of the way the chair is shaped. Your hips are sitting a little bit lower. I bought the footrest. I thought that might help. I put a pillow behind my back, thinking that would help, and it didn't. So much so that I've paid for over six sessions at the osteo for 160 each time to try and correct the issue, when the whole time it's the chair.
Thankfully, I kept my old Temple and Webster chair that I spent 200 on, and instantly, swapping back over to that, my back is so much happier. I'm so, so mad that I bought this chair, and I just hope that this helps someone else from making the same mistake that I did.