What size scooter / motorcycle cover?

[slowfast]

I need to buy a new cover for my Honda PCX. What size have people purchased? I don't want too big, but doesn't need to be too tight.
I tried searching on here first but when I tried it said "cover" was too common of a word!

[iceman]

Maypole scooter fits fine with no tailgate box fitted (just the bike), or Oxford small (or alternative if a rear box)