This undershirt is a copy of the undershirt that is on display in the Gettysburg National Military Park Visitor's Center museum. It features two button placket and the dropped sleeves that are common with period undershirts. The cut of this shirt is a tapered cut and this it is made to be form fitting and not loose or baggy in fit. Please pay close attention to measurements when ordering. The chest measurement is taken across the chest at the widest point of the chest. Currently being offered in canton flannel and will be offered in lighter weight osnaburg in future months.