First - kudos to Staples for having at least two dozen different chairs and out and ready to be sampled for comfort. I sat in almost all of them and liked this one the best - and was even happier when I found out it was on sale. Pretty easy to put together and after a week of using it I find it to be comfortable and functional and I'm pleased with my purchase.
The instructions for this chair rated the assembly as "easy". However I struggled to get the casters on the base. Perhaps I'm just not strong enough but I had to google "desk chair assembly" before I realized you really have to smack the casters in. Once I got past that the chair went together easily. I'm happy with the chair it looks nice & is functional & is very comfortable on my lower back.