I bought this chair for my sister. She has some back issue from working too much in front of a computer recenlty. There is only like five or six steps in the instructions and they even provided spare screws and a hex key so it's very easy to assembly. It took me about 20 minutes-ish. I weigh about 120 lbs and my sister weighs about 100lbs. Neither one of us has issue with the hydraulic lift so far and chair feels very stable when sitting on it. Some of the materials do feel cheap but the chair is comfy and has very sturday support.