An Emergency Zone Brand reflective blanket is a must for every emergency kit. This solar blanket reflects 80% of your body heat, conserving heat in an emergency situation. In addition, this blanket is over twice the size of other reflective blankets allowing 2 or even 3 people share body head. Survival experts recommend shared body heat to prevent hypothermia, but other blankets are just too small to wrap around more than one person. A single oversized reflective blanket is superior to two standard ones.