The chair is very easy to assemble once you find the instructions which are enclosed in the seat packaging. When attaching the caster wheels, push the wheels in, as they do not snap in as assumed. The instructions does not detail how the caster wheels should be applied. When attaching the arms, this can be tricky but pay close attention to instruction sheet as how the arms and back of chair are shown. Attaching the arms can be a bit confusing. Overall the chair was easy to put together once the arms and wheels were attached.  I love the chair and it is very comfortable.