I struggled with deciding weather the extra cost was worth it for this chair compared to some of the others I found. a few of my co-workers chose cheaper products and they are terrible to sit in for long periods of time. I really like the material, it seems sturdy. The lumbar support concerned me when I saw it was a pillow style but after sitting in the chair it makes sense because I can raise or lower it convenient (since its on stretchable straps) to my preference. The Alan-wrenches provided to assemble the chair are not the best quality. one of them stripped out on the first screw before it was even tight, (but did not strip the screw) but by the time I was trying to finish the assembly the second Alan-wrench stripped as well--good thing I have a tool set with Alan-wrenches handy! (for those of you who don't know what an Alan-Wrench is, its a Hex-key style tool. I know people use different terms to describe them).
Also, there was an issue with the shipping company (at the local station) and when I made an enquiry to Dowinx they responded within 24hours and promptly began to assist me with resolving the matter!!!
If I would experience any issues I will be sure to update my review, but for now its great, THANK YOU!