This box can greatly save your room inside the car and you can put your ski board(snow board) or other l age in it. When you drive your car on the road, it will greatly attact the public's focus.

We make a great effort to study the fluid dynamics and make very much experiment, finally we manage to make out such a perfect design.
Note: In the rear of the box, there is a light and this will make your drive attactive at the night.