Caterpillar Men's Flame Resistant Insulated Jacket 88% Cotton, 12% Nylon Imported Machine Wash FR Certified to UL NFPA 2112, NFPA 70E, CAT 4, ATPV 48 9 oz. FR 88 percent cotton/12 percent nylon, lining 100 percent for cotton twill, 100 percent modacrylic insulation Storm blocker plus: waterproof, windproof, breathable, and seam taped 2-way concealed Nomex FR front zip with hidden snap closure and storm flap Patch pocket on left chest with zip closure and tool pockets on top with hook and loop closure, inside pockets, and sleeve pocket Machine wash Imported