For my 1973 Star (Simson) size M fits very well. Easy to pull on and take off. If the steering lock used sees the tarp from something stupid and lose their fit because the steering is so completely smashed. But this is not a flaw.
The elastics are relatively rigid, but the tarpaulin forms front and rear very good, so the cloth should not immediately be lost.
There are several, very thick and solid-looking eyes for your own cords / rubber bands and a small velcro in the middle. Whether the length Velcro holds remains to be seen. If our coastal wind once travels under the tarp ...
In doubt, check itself secured by a rubber band.
The long-term test is of course made even more, but I am in good spirits, as my old Plane (quality: "thinner Aldi bag without everything") has endured almost 1.5 years.
UPDATE 15 June 2014:
After several months now my conclusion. I'm still excited and very pleased with the tarpaulin. She has to take quite a few coastal storms and severe weather (incl. Official severe weather warnings) survived without damage, fly away (for severe weather warnings I have the plane made with an elastic band between the eyelets of the tarpaulin for additional security).
Also through the daily use no damage incurred, no cracks or holes. Unique buy recommendation!