Deathwind,as I said it works for me.It is something I EDC in my Carhartt coat.I also carry disposable heat packs.If I am out in the woods I am dressed for the weather.I make fire before I start to shiver.Been above the Arctic Circle in the Navy.Did a lot of stuff there while shivering.I know what my limits are.As I said this works for me....

BOATMAN
John