As comfortable as a child's school desk.
I purchased this glider a few years after buying the 5' glider. The 4 ft. glider has a much more upright back and a shallower seat. It is only comfortable if you sit on it sideways with your back against the arm (with pillow) and your legs up on the bench. I bought online from a different company and tried to return but they didn't follow through and I'm stuck with it. I strongly suggest trying this glider out for comfort before buying.