This elegant solution is a wonderful example of the beauty that can come from innovating for less. Yves has other such projects like his One Laptop per Child.
Check out the Herman Miller website on the chair. They share interesting information, photos and videos on the process of the design of the chair.
And on top of it all, it is a fun experience designing your own Sayl chair. You can choose from different colors for the frame, and different types of fabrics and chair types. I designed my chair 5 different times (with various bold colors), before finally settling on classic gray and black.