Super comfortable. I love the feature of the chair that allows you to recline a little (you can switch this back to being a stiff chair as well). The seat is very comfortable, likely will be able to study for hours on end in this chair without discomfort. 
Super easy assembly. Box it came in was a little questionable, rather beat up and taped strangely, almost like a return? but the item was not damaged or defective at all.