Questions about dm babylove Rain cover

The manufacturer only states that this rain cover is suitable for all common combination prams.

The rain cover is actually completely closed at the front. It does not have a window to open but is of course transparent. The rain cover has ventilation holes at the sides. https://www.dm.de/babylove-regenschutz-fuer-sportwagen-und-buggys-p4058172542367.html

I have a mountain buggy nano stroller and it works