There is something that puzzles me about these seat dimensions. Let's assume, for discussion, the spacing between the insides of the armrests is 16.8 in. So, 16.8 x pi = 52.8 in, which means that a spherical or cylindrical shape of that circumference would just fit, but barely. The central portion of my torso isn't exactly spherical or cylindrical, but even being a bit overweight, it is nowhere near 52.8 in, circumference. (My waist size in 38 in., and my hips measure 43 in. I am a male, 5ft-11in, 190 lb.)