Fabric Type Mylar, Reflective, Bivy Sack, Bivvy Sack. Mylar, Reflective, Bivy Sack, Bivvy Sack. It is made of durable insulating Mylar material designed by NASA for space exploration. It retains / reflects back 90% of body heat.
This product would be ideal for outdoor enthusiasts, campers, or first responders who require a waterproof, thermal sleeping bag for off-grid situations in harsh climates.
