do these blankets keep you warm? like a "space blanket"? (those silver blankets)
This is an emergency blanket meant to keep users warm during a winter emergency and cooler in the summer by reflecting the sun away. The manufacture did not provide a temperature rating for this blanket.
I always pack one of these when I go camping as I have a hard time maintaining my body temperature. Not only do they reflect heat, they also serve as a vapor barrier between you and the ground. Might be a little loud if you shift a lot in your sleep but it beats shivering all night.