noblechairs - ICON - Gaming Chair - Knob Feel Review I could gush about the lovely, soft, PU Leather… I could talk about the enormous amount of customisability… or even the tasteful nature of a usually gaudy product range. But of course, the star is the great big Knob! It has a lovely firm rotation, as to be hoped for in this kind of purpose. A+ Would Feel Again! nOb by nOb Control - Knob Feel Rev