A guy I used to work with made one out of a military sleeping bag after I told him about my Heater Body Suit. I was in need of some new cold weather clothing when I got mine so I paid about the same as a good coat and bibs. I like being able to walk in the woods with light clothing on and not overheating. I have never been cold in my suit, this is my 3rd year for it. I only hunt from a treestand and with the legs in it I have plenty of mobility. If I did not need new clothing I would have probably tried to make my own. But I am very happy with mine.