SHR Flex is a Frontal Head Restraint. It protects racers from severe or fatal upper neck injuries in high impact crashes. Its unique articulated low profile collar and body contouring flexible foundation affords racers an unprecedented level of safety, comfort and fit. The design automatically adapts to any body type and seating configuration. It is unobtrusive until crash kinematics transform it into a biomechanical optimized restraint configuration. SHR Flex’s market success demonstrates the merits of a new design led scientific approach in an area previously mired in 20 year old thinking.