Easy to assemble they give you a hex key but it’s a lot easier with a 1/4” ratchet and a hex bit. Very comfortable seems to be well made. Returned another brand bought online. I’ll never buy another chair online you have to sit in it to see if it’s right for you.
It took me about 90 minutes to assemble the chair and I am pretty savvy on instructions.and using tools. The chair is not as comfortable as I thought it would be