Lincoln XVI Series Heavy Duty Split Leather FR Welding Jacket K4933 Top Features Heavy Duty Split Leather at high wear points with 16oz. and 9oz. FR material across lesser wear points to help maximize longevity. Leather and heavy weight material increase heat, friction and spatter resistance while multi-layers help prevent spark intrusion. Innovative cushioned collar & cuffs also feature adjustable snaps for enhanced comfort and fit with silk lined sleeves. Adjustable side straps for a comfortable fit and an inside pocket offers extra protection for valuables. Jackets are available in sizes M-5XL.