The assembly is difficult if you don't have someone to help. The instructions are good for nothing. The only person who can understand these instructions is the person who invented this chair. Luckily I found a YouTube video that shows how to put together a similar chair. After assembling it and using it, I had to  tighten the armrest screws a few times as they kept coming loose. Still, It's a nice chair, comfortable, and looks good. The massage feature is also nice but the usb with short wire is disappointing. A good chair overall.