The Flame Resistant Lightweight Coverall is UL-certified NFPA 2112 to help protect you against hazardous conditions that can occur on the some of the toughest jobs. Designed for your protection and comfort. Constructed of 7 ounce twill that's 88 percent cotton and 12 percent nylon to keep you warm and comfortable. It features elastic waist inserts, bi-swing back for ease of movemen, concealed snap at neck and waist, large back pockets and heavy-duty brass zipper. Meets NFPA 70E requirements. Material: Cotton, Nylon.