Very easy to install 2 people make it easy 1 person can be difficult. I am 275lb woman and I was a little weary buying this chair as a plus size person. I felt that this chair supports my weight very well and I feel very comfortable in it. The headrest is my favorite piece I get a lot of neck and back pain from my old chair. This new chair supports my neck and back and allows me to continue working while getting this support. I wasn't too thrilled on the price but it's better than paying $1200 for an HM chair!