Mylar Emergency Rain Poncho is a Must-Have supply for your bug out bag build. One of the most effective solutions to prevent hypothermia during any emergency situation. Made from the PET reflective space/mylar blanket developed by NASA. Retain up to 90% of body heat. Extra thick- 26 micron, Compact- Pocket Size design. Water-proof & weather-proof Size: 47 X 40 Inches Folded Size: 4 X 3 X 1 Inches Be prepared in the rain/snow and cold weather with EVERLIT Emergency Rain Poncho. The NASA designed space blanket material is capable of retaining up to 90% of the body heat. The highly reflective two-sided sheeting can also serve as many tools such as signal, blanket, sleeping bag liner.