The ReGeneration was built with a minimalist's touch and is basically the skeletal structure of a chair. But it's built for a wide array of sitters, with a flexible open-backed plastic frame that cradles comfortably and a slightly padded seat that's supportive without being overstuffed.
Dr. Aibinder says: "This chair has a great controlled recline that keeps your core active. It's not as cradling as the Mirra 2, but it's close." [From $677; knoll.com]