When first responders arrive on the scene preventing shock or hypothermia is mandatory before other treatments can begin. Emergency blankets that retain 80% of the injured's body heat are an effective way to prevent shock. They also can be a valuable asset to prevent hypothermia when lost in cold weather climates, until search and rescue arrive. The exterior of our 52" x 84" aluminized casualty blanket is Safety Orange or O.D., the interior is a highly reflective aluminum. Each side is very useful in preventing heat loss and attracting attention. Put one in the trunk for peace of mind. Shipping 6.25"L x 3"W x 8.5"H. Weighs .93 lbs.