WranglerMen's Cowboy Cut Long Sleeve Western Snap Solid Work Shirt

Is it good for welding

6'3" 200 lbs anyone recomend size? I bought 2 different styl large wranglers and both way too small.

Im looking for this shirt in a 3xlt or maybe a 4xtl if it shrinks, does any know what size that might be i cant seem to figure out the size charts.

what is the weight of the fabric used to make these shirts ?