Review on Essential Mylar Thermal Blankets: Buy in Bulk for Emergency Situations by Jimmy Jefferson

, I've never used one of these so I don't know if it actually works for heating, but I bought a bunch for my kids and grandkids to put in their cars (they live in Maine) just in case that they break down in winter . I also have them in my car for the same reason, but I have more because I had the opportunity to give them to homeless people and they were SO GRATEFUL. Good value for money.