The Dynaliner is an ultra-lightweight high performance closed cell foam. Dark gray in color, Dynaliner is available in 1/8″, 1/4″ and 1/2″ thicknesses. Dynaliner is self-adhesive with a high-temperature acrylic adhesive. Dynaliner is optimized for temperatures from -30°F to 200°F (-34°C to 94°C) and meets both UL and FMVSS flame resistance.
Learn more here: http://www.dynamat.com/brands/dynaliner/