1. Arcturus All Weather Outdoor Survival Blanket - All Purpose, Thermal, Reflective, Emergency - 60" x 82" (Olive Green) (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
ALL WEATHER BLANKET: This unique blanket features an aluminum relfective side which can be used to reflect heat, create a radiant barrier or signal for help. The other side is made of a durable nylon which can be used as a blanket, tarp or shelter.LIGHTWEIGHT: This blanket weighs less than a pound and will travel lightly in your backpack. It comes in its own carry bag. The blanket measures 60" x 82" (Approx. 5 ft x 7ft)

2. ER Emergency Ready Thermal Mylar Blanket (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
Provides compact emergency protection in all weather conditions by reflecting back and retaining 90-Percent of a survival victim's body heatCan be used to prevent and counter hypothermia by reducing heat loss from a person's body

3. Space All Weather Blanket Red (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
Grommets in all cornersWarmer than wool

4. PAMASE 82" X 62" Extra Large Emergency/Survival Blanket - Moistureproof and 90% Heat Retention - Pack of 6-Silver (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
Ideal for emergency situations where protection from hypothermia is required. Retain up to 90% of body heat, keep warm.Durable advanced Mylar blanket is toughnesss, moistureproof, windproof, light. Perfect for multiple-purpose, ground cover, sun shade, stretcher, rescue or distress beacons, ponchos, tarps.

5. Ready America 3100 Survival Blanket (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Ultra-thin thermal blanketFor body-heat retention in emergency situations