This is by far the best cover I've ever used. My bike is outside 24/7 in heat, humidity and thunderstorms. The fit is perfect since it was cut specifically for the FZ6. When the lawn guy uses a leaf blower in the parking lot, the cover does an admirable job of keeping out debris. The material is thick and waterproof... if you manage to tear it then you did something stupid. Price is about $100, but this cover will outlast any "premium" cover offered by other brands and thus pay for itself. A top of the line Dowco will cost you ~$70.
The only reason I'm not still using it is due to the fact that it was stolen during a rash of bike thefts in my area. I got paranoid that the Yamaha logo may have caught the attention of the thieves and the only reason they didn't take the bike with the cover is because something spooked them. I now use the typical crappy generic, one-size-fits-all cover that I f##ing hate and will probably have to replace after 1-year :Flip: The generic cover makes the bike appear to be a small cruiser though...