Mylar survival blankets are supposedly somewhat effective at hiding thermal heat signatures.
The thinker grabber all weather blankets are really effective. Pretty sure there was a story about Afghan insurgents using them to evade thermal detection.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.