Thinsulate

[2] It was originally marketed as an inexpensive alternative to down; at the time, 3M claimed it was twice as warm as an equivalent amount of any natural material.

[9] Like most insulation materials, the gaps between fibers not only reduce heat flow, but also allow moisture to escape.

[11] The thermal resistance R-value provided by Thinsulate products varies by the specific thickness and construction of the fabric.

[citation needed] Thinsulate is now used in the fabric roof of the convertible automobile, the Porsche Boxster.

[16] It features in the upholstery of Saturn sedans, Ford F-150 pickups, Buick Park Avenues, and F-16 fighters.