Carhartt Tall Flame-Resistant Heavyweight Hooded Sweatshirt Style # FRK006T. When cold weather is in the forecast, reach for our flame-resistant heavyweight hooded sweatshirt for warmth. It's constructed of heavyweight, flame-resistant 14-ounce knit, 58% cotton/35% modacrylic/7% polyester. For added comfort, it features an attached hood with adjustable draw-cord closure, and a front hand-warmer pocket. Anti-odor control is also included. Meets NFPA 70E standards.