I had to get a new chair because I was unable to sit without pain due more than a few hours and very quickly this chair solved the problem. It is a bit bulkier than I wish but has a minimalist euro profile plus enough padding for an American body. The wheels are extremely smooth and gentle on flooring. The backrest adjustment is less dramatic than I'd want but like I said I'm no longer in pain from poor lumbar support.
I put it together myself in less than 15 minutes. Was easy. Good instructions and Allen wrench came with it. Chair beautiful and very comfortable. I highly recommend it.
We replaced our ugly peeling Martha Stewart chairs with these Union & Scale chairs. They are lighter move easily and have armrests all a big improvement over our old chairs.