Duluth trading heavy twill shop coat

This is a men’s shop/chit coat. It’s size “mt”, I’m 5 10 200 and fits perfect. Seems to fit like a medium. Not sure what the t stands for. It’s a heavy thick dark blue twill with tortoise shell buttons. In very good prepwned condition. I have only work it a couple times . Please check out my closet and let me know if need any more info or pictures. Also can give you a deal on bundles and always open to offers.