Details, Size & Fit. The Westport white dress shirt is exclusive to Politix's Black Tie collection. Luxe in a supersoft cotton, and sartorial with its fine diamond texture. Constructed panelling delivers a modern slim fit to classic mens shirting. Order The chablis and cavier, this slim fit shirt is perfect with Politix suiting for The esteemed night out. Material: cotton.SKU: PO348AA73EJQ.