TITAN Emergency Mylar Survival Blankets -- Check this awesome product by going to the link at the image.
Polarshield 2 Person Survival Blanket - Emergency Heat Reflective Camp Blankets
EDC throw this one into the survival kit and don't forget about it, until you need it.
Survival Blankets – 7 Ways They Can Save Your Life or Your Sanity
The Warmest Survival Blanket...
Let's talk about homemade sleeping bags...warmer, lighter, cheaper.
22½ Uses for Emergency Mylar Space Blankets - The Organic Prepper
European Army Surplus Wool Blankets. Perfect for keeping in the car. (Plus, they're bargain priced!)
Camper's Survival Blankets Polarshield Blanket Military Blankets