The Ergowave saddles from SQ-Labs were developed alongside the University of Frankfurt with government funding from the Federal Ministry for Economic Affairs and Energy. Yeah I know right, who would have though such a government department even existed in the world.
The Ergowave has an interesting design. The back of the saddle surface is raised to disperse weight more to the rear. In combination with the deep groove in the center of the saddle, this relieves pressure on your “gouche” which takes some getting used to but I found that it definitely makes for a more comfortable ride.
The real magic comes from SQ-Labs active technology. The rails underneath the saddle mount direct to the saddle in the front but at the back mount to something which acts more as a joint to the saddle. This section flexes as you ride enabling pelvis movement of up to 7 degrees. This movement is supposed to simulates the movements of walking and increases the efficiency of your pedaling.
You get 3 spacers with varied density which essentially act as cartilage and provide some damping to the saddle to control the amount of movement that best suits your riding style.
These saddles are also available in a range of widths (12 / 13 / 14 / 15 cm) which again means you have a saddle which specifically suits your build, weight and riding style/discipline.
Weighing in at 279g (14cm width), the Ergowave is actually very light when you consider how much more complex the saddle is. Retailing at 130 EUR /170 USD, these saddles are far from cheap but they are specifically engineered towards managing posture and comfort. The research and development in those types of projects in themselves are very expensive.