I researched online, tested chairs at office supply stores and even stayed at a hotel for three nights testing a great chair that cost $950. Finally saw the HumanFlex at Modern office furniture. Took a chance and purchased online for around $249. Not only was it a great chair, the entire experience was outstanding. The packaging, the instructions, labeling of the parts, quality and ease of assembly were above and beyond my expectations. I have had back surgery so being able to adjust multiple parts to fit was a Hugh benefit. The lumbar support is perfect. I would highly recommend both the chair and Modern Office Furniture.
The Chair is very comfortable. Conforms nicely to your body to make sitting at a desk very comfortable. The only thing that could be improved is the way in which you adjust the back. It doesn't move freely. You need to push very hard to get it to adjust.