Good point : quality of material is good - should be at this price.
Now the rest. Size is really tight - no idea what advantage this is supposed to gain anyone for the sake of a few mm of material in an expensive cover (more expensive than many padded bags), and the handle holes don't take into account two people carrying one each side - they only offer access to the bottom of the handles, not top and bottom.
I know it's not the heaviest sub by any means and I can lift it fine when well, but if you have back issues and want to take this between two, you can't with the cover on. Make the handle holes larger and use the material to stop the cover being ludicrously tight.
Great speaker designers, not great cover design! Not certain if I buy another sub I'll buy it a cover.