ProGARM® introduces a new Flame Resistant Helmet Liner, which can be worn underneath any ProGARM® helmet for extra protection and warmth due to its inherent flame resistant qualities. A perfect complement to any ProGARM helmet solution, the 8400 Helmet Liner is also part of the ProGARM® baselayer range which features a snood, balaclava, top and leggings. All designed to keep you safe and warm in even the most testing of environments.