Fits snugly over the head and ears, enhancing warmth when worn under a hard hat or on its own. Made with 70% high-quality Merino wool, an extremely fine and soft wool that is inherently flame resistant. The addition of aramid fibers enhances the flame-resistant properties. Merino wool traps large amounts of air, providing excellent insulation, and it wicks moisture. Wool generates a high level of absorption heat (created when the fabric absorbs moisture) and can absorb up to 30% of its dry weight without feeling damp.

Made from comfortable Nomex yard for a soft and stretchable fit. Meets ASTM F1506.

The FR Liner is made from a comfortable and stretchable Nomex knit and it meets ASTM F1506 standards. The liner fits easily over a hard hat and covers most of the face.