Now available in regular and shoulder length are FR 3-Layer Extreme Winter Liners with 3M FR Thinsulate as the insulating mid-layer for FR fabric protection and extreme warmth.
FR 2-Layer Cold Series Mouthpieces are a natural liners complement for adjustable face protection with outstanding fit.
All N-Ferno FR winter products meet ASTM F1506 requirements. They will not melt or drip.
Full N-Ferno specifics are yours free for the asking.