What makes the Anda Seat Dark Knight Premium pretty unique is the pillow design. I've never seen anything like it before. And to be honest, I was skeptical on the levels of comfort of these monstrous neck and lumbar pillows. I was totally in the wrong! The square lumbar cushion works way better than the standard small pillows found in standard issue gaming chairs. It provides better support over a larger area and does not feel awkward while leaning back. The neck pillow, which is about the size of an actual pillow, perfectly fits the natural curves of the spine for optimal comfort.