The Miller WeldX Jacket combines a 7oz WeldX front and sleeves with a 9oz flame-resistance cotton back. WeldX is a lightweight base fabric made of a blend of high-performance fibers and proprietary compound producing a silicone barrier with extreme flame resistant properties that repel sparks, spatter and other molten metals. • Lined sleeves for added protection • Zipper closure with Velcro storm flap • Extended rear tail • Vented back for improved air flow • Barracuda style stand-up collar for extra neck protection • Pre-shrunk fabric eliminating shrinkage • Accessible inside pocket • "Fold-in" sleeve snaps for a better fit around the wrist • Machine washable without the loss of durability • Chromium Free alternative for easy disposable methods • Finished hems and reinforced stitching enhance durability Chest in inches: S(42), M(46), L(50), XL(54), 2XL(58), 3XL(62), 4XL(66), 5XL(70)