It is your thermal and watertight covering against wind, rain and cold weather. Your must have to keep your scooter from hibernating in the winter season. Beware of imitations. Direct Bike Cruiser 125.
One of the anti flap valves leaks, right from the first inflate. Screws to fix front of flap under the bars could be better quality.
Having said that, and despite it being a bit awkward getting on the scooter now, it keeps you warm and dry. And that’s why I bought it.