The chair itself is very comfortable.   The first chair had a broken slide out adjuster for leaning it back and made a loud crack every time I adjusted my weight.  I kept that one at a discounted rate and I took that chair to my shop. They sent me another one at the sale price, which was about 15% off. This one doesn't make a loud crack like the first one,  but it groans like its scratching metal on metal every time I shift my weight.      I'm 5'9, 178lbs athletic farm build with 3-4 pounds on my stomach. I'm not overweight at all and I don't understand how this chair can sound like its stressed out, when its rated at 300lbs.  The seat portion is very comfortable,  but there's something seriously wrong with the mechanism.  I'm not sure if I want to keep this one.. but at the same time, the seat itself is great and I don't want to risk getting another chair that doesn't fit my body.