It was very easy to assemble and took me 20 minutes. You can do it on your own, but it's quicker and easier with two people (the backrest weighs quite a bit and the other individual parts aren't exactly light either).

I have been struggling with a work supplied office chair when working from home, supposedly featuring lumbar support, the chairs was hard, poorly made and rickety. With a move coming up I decided to invest in a good chair with the dual purpose of acting as a living space chair in a small studio flat. After doing research I decided to invest in a Dxracer BANANYA CAT. Once assembled the chair feels like a premium product justifying the investment. I highly recommend it.

I have an older model (~8 years) and one of the wheelbase arms broke off. DXRacer was responsive to my email question and told me which base would work with my model. If you're looking for parts, the links can be found in the FAQ question: "If my chair's warranty has expired and I need to purchase corresponding parts, what should I do?"