I recently bought it in size for machines from 70-150 horsepower. However, it is too big for a 70cc 4-stroke Yamaha motorcycle. I probably should have gotten the immediately smaller size.

I recently bought it, I don't know how it will hold up over time, but based on what I saw, I believe it will last 3-4 seasons if properly tied and not hit by wind. The reason for the review is because this particular series of covers has a sizing issue. However, the one I bought for Suzuki DF100B is very comfortable and spacious, so I believe that the "up to 150" size mentioned will likely be accurate (unlike the "up to 8" size, which as others have mentioned, is very small. I bought it for a 6 and had to return it because it wouldn't fit at all, and got the next size up immediately)