The Mesh is not as strong as I thought it was when trying in the store. The locking mechanism make a noise when locked as if something is rubbing against it.
I've been using an older high back office chair (20 years? replaced the base once) and it was irritating my back severely. This new chair is ergonomically designed and my back is doing much better.
If you consider to get a comfortable office chair in a reasonable price this is a good choice. The only problem for me is that I still need to use a small cushion to support my back to make myself more comfortable to sit on it for a long day of work. Maybe it is due to I am a petite size person Other than that it is nice chair.