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It means that the garments flame-resistant properties ensure it will resist catching fire, and if it does catch fire, it will not continue to burn once the source of combustion is removed. Flame-resistant clothing can and will burn when introduced to open flame from a flash fire, arc flash, combustible dust explosion or other fire sources. Remember, FR clothing is NOT fireproof. It is after the flame source is removed, that the FR magic happens. Flame-resistant workwear will not contribute to the severity of burn injury.Flame-Resistant clothing is made from material that is inherently resistant to flames and embers. Meaning that the threads and fibers will naturally self-extinguish. Flame-Retardant clothing on the other hand, is made from materials that have been chemically treated to achieve the same self-extinguishing properties.
Consumer Reports indicates that flame-retardant chemicals used in children's clothing are required by the CPSC to be nontoxic, but manufacturers are not required to label chemicals they use, if they use any at all. ... Due to the poor breathability of the fabric, however, children may be prone to overheating and rashes.