This is apparently a part that breaks fairly often on older Volkswagen buses. A coworker of mine has a 1971 Camper and brought in a broken strap to see if I could design a replacement. After playing around with a few different widths we found this one had the best flexibility and tensile strength.I added mouse ears to one end because I had some issues with curling. They're just 1 layer high and can easily be cut away. To keep things clean I did not add holes to the vertical end since it caused some printing issues and it's much easier to drill to holes later than try to print a vertical hole.