Portwest Mackay Anti-Static 4-in-1 Jacket (MJ887)Anti static Day Night 4 in 1 Rain Jacket combining Oxford seam sealed MJ370 jacket and MA230 vest (zips into outer jacket). 2 tone mid length Anti static Jacket, mesh lined, internal embroidery pockets and deep external pockets with reflective tape. Anti Static Vest with Polyester outer and Cotton lining, fully reversible, embroidery pockets, reflective tape. Carbon Fibre thread throughout jacket and vest which makes this 4 in 1 jacket Anti Static.