A proper bike fit is essential for optimal performance, efficiency, injury prevention and comfort on the bike, and will provide a rider with the most economic means of expending energy. A proper bike fit will also prevent pain that is common in the knee, hip, and lower back, particularly with riders who are trying to adapt their bodies to the bike they already have purchased. Retül uses a cycling-
specific 3D motion capture system that reads a rider's movements while he or she is pedaling on the bike, and records all three planes of movement (3D). This type of data reflects how a rider actually rides a bike and cannot accurately be captured with 2D video, static fitting, or eyeball fitting. Retül's dynamic fit tools allow a bike fitter to make fast and easy adjustments to a rider's position using objective and highly accurate fit data to guide the changes.