CHARNAUD® SURVIVE-ARC® CAT 4, 40 cal/cm² Conti Winter Jacket, Navy Blue Application: Arc flash protective work wear for the electrical industry. PRODUCT DESCRIPTION: CHARNAUD® SURVIVE-ARC® CAT 4, 40 cal/cm² Conti Winter Jacket, Navy Blue with fleecey liner, long sleeves, three front pockets, zip and flap over front closure featuring 25mm silver reflective tape around biceps, cross on back and strip on right breast.