Cold Smoking Fuel Saving

[toolmaker]

I had a thought! When I was a child my grandma used to cover her tea pot with a home made cover. I think that they called it a teapot cozy. What if a guy made a " cozy " for a smoker? Would this help maintain temps. I know some of the nicer smokers are already insulated. Has anyone found some kind of an insulating material that could be easily sewn or fastened together that would work to help maintain smoker temps?

 

[pineywoods]

Some people use welding blankets