Key Apparel Part #575.47
These shirts are a bit oversized for more room, another benefit for cold weather underlayers.
Heavy duty 9oz cotton Hickory stripe denim make this the most popular shirt for Ironworkers and Loggers in the Pacific Northwest. I've worn these shirts since starting the apprenticeship in '75. One of the awesome things about these shirts is the fabric is made in such a way so that the burn doesn't 'crawl' like most cotton shirts do. This is why they are great for welding, and burning.
May ship directly from Key.