FR heavyweight, 2-ply, 5.5-ounce knit: 48% modacrylic, 48% Tencel and 4% spandex. Moisture-wicking, fast-drying technology with anti-odor control. Full facial protection extends below the neckline. Face mask pulls down below the chin when not needed. Flat-seam, 2-ply construction enhances comfort and warmth. Carhartt FR label sewn on back. Meets NFPA 70E standards. Flame-resistant fabric by Innovative Textiles, Inc. VPN: FRA003.