Hard Hat Liner - Pioneer Black Flame Resistant Quilted Hat Liner, 564AItem #: V4510870 O S Model #: 564A Hard hat liners fit under or around hard hats to keep workers comfortable in cold temperatures. Conveniently fits inside hard hats helmets bump caps and non protective headwear Special lining provides warm and comfortable protection from the elements Long neck design for complete head and ear protection One size fits most hard hats Material is machine washable Attributes Fire Resistant, Insulated, Lined Closure Type