ARC FLASH & FLAME RESISTANT FOR LIFE - This 5.2 oz material is a soft, inherent blend of Modacrylic, Cotton and Nylon. They will remain arc and flame retardant regardless of the washes and wear cycles. These neck gaiters, or face masks, are NFPA 70E Compliant, HRC / CAT 1, EBT = 6.4 cal/sq-cm and meet ASTM F1506. Don't add fuel to the fire in the event of an arc flash or flash fire. One Size Fits All. These FR neck gaiters have an asymmetrical, stretchable rib panel so it can fit any size head. | TIRED OF ITCHING? SKIN SAFE & LIGHTWEIGHT - This FRC fire resistant fabric is safe to wear directly against your skin when at work. The flame resistant materials used are non-allergenic and will not react with your skin. We voluntarily meet the most stringent international health codes related to formaldehyde, ammonia, arsenic, heavy metals and other toxins. Go ahead and sweat in it. | SAFETY DOES NOT HAVE TO BE BORING - it can be cool and comfortable. These were developed for an electrical utility whose lineman did not want to wear a respirator or balaclava to keep the creosote off their face in the hot Texas summers. Since launching these fire retardant masks, welders, oil & gas workers, miners and electricians have all worn and loved these for their year round comfort and protection. Every FR face mask comes with a hard hat sticker. | MADE IN USA FR HEADWEAR FOR MEN & WOMEN - We believe in making high quality fire retardant rated products right here in the USA. These arc and flame-resistant face muffler hoods were designed, developed, tested, printed and sewn at our facility in California. BENCHMARK FR manufactures in-house to ensure quality and value. Proudly bearing the "Made in the USA" label. | UNCONDITIONAL LIFETIME WARRANTY - We stand behind all of our FR Clothing products including our face masks, button tshirts, long sleeve henley shirts, welding pants, bandanas, jackets, and coveralls for men and women. So much that we will repair or replace all BENCHMARK FR clothes, even if the damage was caused by accident. If for any reason these tears or breaks, get in touch with us and we will fix them for free no questions asked. Just don't lose them!