Can you please tell us a bit more about Il Portone shirts. Are they bespoke, MTM etc.? Il Portone is supposed to be one of the grand old names of Italian shirtmaking, according to local acquaintances of mine in Rome. The ones in pic above are RTW, but they also make MTM and self-measure MTM Ã¡ la Jantzen etc. Website. The shop is old-world and very friendly, they sell nothing but shirts, ties, pajamas and boxers made from shirting fabric, as far as I could see.