Features Product data Material Form Colors Form and design are crucial properties of a roof box. Round forms, missing edges and angles as well as embedded load carries are essential for the aerodynamics of the box. The rear of the box shall be rounded up without heightening as other forms will cause disturbing air flows. The form of the box has direct impact on aerodynamics and fuel economy and is crucial when it comes to air flows and vibrations. Further, thanks to the good design, a F2 roof box does not have to be washed so often. Ensure that the design of the roof box matches with the design of your car. © Fiber-Form   design notes