Both elements needed for a man 275 lbs+. Used on a concrete surface this chair moves swiftly and steadily and can endure long sessions of use. Recommend for those looking for a new or replacement work chair.
Nothing special about this chair. The price is not worth the value. The seat is uncomfortable after about 2-3 hours the back is not high enough the back does not recline far enough and its a bit narrow. I expected more.
Had to buy a new chair for my home work office and this one has all the bells and whistles without the high price tag. I'm only 5' tall with short legs and this has great depth lumbar support and adjustable everything. Staples made it easy to order fair price free delivery and easy setup. Pleased with my choice.