Received this chair as described and assembled very easily... clear instructions. Purchased two chairs from other sources and they were returned because of one major problem... not comfortable! The seat and back with lumbar makes this chair very acceptable. Most of the seats in chairs I reviewed had "risers" on the sides and front which cut off my circulation or pinched my hips... this one is mostly flat so that it sits comfortable. I use mainly at my desk with computer keyboard, so folding arms are required to free my elbows to type, and use for comfort when just surfing. The lumbar is adjustable and the only way I can sit in the chair for hours without back pain. Chair is medium weight (not heavy duty) and rolls easily. Mu previous chair had 1.5" wide rollers and these are 2" which I think helps to roll on my carpet protector. The tilt backward is a bit stiff but expect will loosen with time. This is medium duty chair that meets my needs perfectly for now.