Made from 9-oz. 88% cotton/12% nylon twill with 100% cotton twill lining and medium weight 100% modacrylic insulation. Storm Blocker Plus™ is waterproof, windproof, breathable and seam taped. Durable Nomex® 2-way concealed front zip with hidden snap closure and storm flap. Features adjustable cuffs with hook-and-loop tabs, interior right chest pocket, patch pocket on left chest with zip closure and tool pockets on top with hook-and-loop closure. Patch pocket on left sleeve with hook-and-loop closure and lower reach in pockets with zip closure. UL® Certified to NFPA 2112; ASTM F1506; NFPA 70E; CAT 4.