Italo, Italy’s high-speed private rail operator, has a luggage policy in 2026 that depends heavily on your "Ambience" (class of service). In Smart Class, you are generally limited to bags no larger than 75 x 53 x 30 cm to ensure they fit in the overhead racks or designated areas; larger bags may be restricted due to space. However, in Prima Business and Club Executive classes, there are no strict size limits for large suitcases, provided you can carry them yourself and they fit in the more generous storage racks. Unlike airlines, Italo does not usually "weigh" bags, but they are strict about keeping aisles clear. If you are traveling with oversized items like non-folding bicycles or surfboards, you must book these in advance. For the average traveler, one large suitcase and one backpack/handbag are permitted across all classes without any additional surcharge.