It is an average choice.
It doesn't have a strap underneath, so you need elastics to tie it down.

In heavy rain, a little water got in, the bike wasn't completely dry, but we're talking about a spot on the seat where, as the cover had settled, water had pooled and stayed there for 1-2 days, so I think it's reasonable that it seeped through. In lighter rain, it performed very well, I must say.

Also, at the spot where the mirrors are on the outside, the sun has worn it a bit and the outer fabric has started to deteriorate. I expect it will tear at some point!

It appears to be a sturdy material and withstands rain and sun. The fit is quite good for a CBR 1100 in XL size. With double seams and internal lining, it covers the entire motorcycle. The only negative point is that it does not have lower rings to secure it to the bike so that it doesn't catch the wind, although the website claims it has rings. However, I believe it is worth its money.