ASTM F1720
Standard Test Method for Measuring Thermal Insulation of Sleeping Bags Using a Heated Manikin
This test method covers determination of the insulation value of a sleeping bag or sleeping bag system. It measures the resistance to dry heat transfer from a constant skin temperature manikin to an environment at least 25 °C colder than the manikin skin temperature. This is a static test that generates reproducible results and is not intended to simulate real-life sleeping conditions or behaviors.
