Emergency Thermal Tent 2 Pack by Grizzly Gear is made of the same Mylar material as our emergency blanket but is formed into a tube tent to prevent heat loss even more efficiently.This compact tube tent provides warmth (retains and reflects up to 90 of body heat), a waterproof and windproof shelter barrier, and a covering to help reduce shock when someone is injured. Grizzly Gear’s Emergency Thermal Tent is to be used as emergency shelter. Also great for camping, hiking, and surviving the cold outdoors.