For warmth without the weight, the double layer knit FR winter hat features a double layer net with a stretchable fit for more comfort. Inherently flame resistant, the FR fabric will not melt, drip or ignite. You’ll have no problem facing the day with this hat Made in the USA and designed for cold weather conditions. Safety  Arc Rating: 28 cal/cm²  CAT 3  NFPA 70E  CSA Z462  ASTM F1506  OSHA 1910.269 Features  Fabric/Material: Modacrylic Blend  Double layer knit  Stretchable fit for more comfort  Designed for cold weather conditions  Warmth without the weight  Inherently flame resistant, FR protection will not wash/wear out  Made in the USA DriFire | FR Winter Beanie | Black