Comfortable.  However, the back pillow is stuffed very full with a lumpy type of material which moves around. This material is not contained in a bag. It is just inside the fabric cover and if you try to take some out it sticks together which makes it almost impossible to do.  Also, there is no backing on the fabric which covers the back of the chair, so you need to be careful not to push against it when vacuuming or moving the chair. The swivel mechanism is smooth. I have 2 of them  and am basically happy with my purchase except for the above mentioned issues.