The geometry of Möbius Strip has an amazing feature: after on turn the runner turns upside down and after the second one he returns in the regular position. Download the template, follow the instructions below, and try it out.
Assembly Instructions
1. Prepare the tools 
2. Cut out the parts 
3. Remove the white edge 
4a. Mark the area. This will not be covered with glue in the step over. 
4b. Glue “B” on the “A1”. “B” should cover the only a half of the area. 
4c. Glue “A1” and “A2” together. 
4d. Result of “A1″+ “A2” + “B” 
5a. Add glue to the remaining part of “B” 
5b. Turn both ends of the strip in the same direction. 
5c. Turn both ends of the strip in the same direction. 
5d Insert the “B” between the marked area of “A1” and “A2” 
5e. Press on the strip and wait till the glue is sticking. 
5f. A classical Möbius Strip is ready. 
6a Darken the edge with a black marker. 
6b Möbius Strip with dark edge. 
7a Glue “D1” and “D2” 
7b. Glue also “D3” and “D4” 
8. Darken the borders of the both components 
9a. Fold “C” with a help of a ruler 
9b. Fold “C” 
9d. Fold “C” in opposite direction, white side should be a inner side. 
10a. Glue “C” on “D2”. 
10b. Glue “C” and “D2″with a colored sides towards each-other. 
10c. The “D1” part is over the “C” part 
11a. “C” will be folded around the strip. 
11b. Fold “C” around the strip. 
11c Glue the ends of “C” 
11d. Glue “D3” on “C” 
11e. Glue “D3” on “C” 
11f. Glue “D3” on “C” 
12. Done. The runner is ready to start the race on the Möbius Strip.
