What is a massif flamestretch jacket?The jacket's fleece lining features Massif Flamestretch® and is constructed with DuPont™ Nomex® brand fiber. Engineered with proprietary knitting and finishing technology by Massif, Flamestretch provides built-in flame resistance, proven durable performance, and comfort from the inside out.
military.americanuniform.com/ocp-elements-jacket-iwol 
