Presenting the TYNDALE MEN’S HEAVYWEIGHT FR VEST. Made of an 11 oz. Amtex FR outer shell, 88% cotton 12% nylon duck, and lined with a 12 oz. moda-quilt. Featuring a rib knit collar, two front patch and two inside pockets, as well as an external kidney flap for wind resistance. Take on your work day with this heavyweight flame resistant vest, arc rated 43.8/CAT 4 and proudly made in the USA by Tyndale. Tyndale Men's Heavyweight FR Vest