Others use pre-made quilted insulating blanket. It also pokes thousands of holes through which heat escapes. At Kennon we build our insulating covering materials using the very best materials. We have been making engine covers for years. By we, I mean the very same crafts people.
Employee turnover is rare.
If you preheat with a combustion heater tell us, we will build in vents in the nose piece of the cover so you can draft the heat over the entire engine. It will keep you warm and the florescent inner shell makes a great signalling device.