You need good mechanical skills to assemble this chair. One thing that they could have done was to put in a magnetic screw pan that Run $2 50 cents. also they should have put in an extra lock washer and an extra washer. These things get lost. Other than that once it's assembled it's really great.
It was easy to assemble I bought two the first one took about 30 min the second one went faster - took about 15. Everything is well-labeled and the design is such that you have some leeway to screw the bolts in it doesn't have to be perfectly aligned. When I sat in them it felt good but it was only a couple min. I don't use these chairs myself - they are for occasional use by family members so I don't have a review for how they feel. Time will tell how they hold up but for what I paid for them I can't imagine I could do better elsewhere.
I ready the reviews and thought I was prepared to put this chair together. BUT it almost got the best of me. I could not get the seat to go into place. Everyone spoke about the arms holes not being on center but the seat was just a little to big and that is what made the holes difficult. The thing about the box use was also my problem. First you put the box down and place the chair bottom on box then the back of the chair on the box to assemble. But not one wrote turn the box standing straight up and use the top of the box to attach the arms. I am a 73 year old woman and I put this thing together in 1 hour all by myself. I am very proud of myself and my new chair.
I need just a simple and less expensive computer chair. This one fits just right. It's not expensive not too heavy. The only problem is its screw holes are not precisely manufactured. A bit hard to assemble. But finally I got it put together. Feels pretty comfortable.