I got one for a birthday present from my brother. It came from a local bike shop. It even fits with 2 mirrors. I don't recall the brand name but it is a heavy duty cruiser bike style. I am sick as a dog but if I get out to the shed I will try to get the name brand for you.
Jim
P.S. He did have to order it. They were out of stock at the time.
I actually bought a cruiser motorcycle cover at Target for $25 bucks - it's ripstop, waterproof, cinches with ties at the bottom, and has a heatshield area for when the motor is hot. It's a little big but it works like a charm!