The LAPCO BIFRBRDK SM TL 12-Ounce brown duck flame resistant insulated bib overall is a small tall. There is a 12-Ounce flame resistant cotton duck outer shell. There is an 11-Ounce quilted lining constructed with a combo of 100-Percent fire resistant treated cotton and non-woven modacrylic batting. This jacket features triple needle stitching on seams and has been sewn with Nomex thread. There are brass zippers with Nomex tape.