Yes, a 78cm suitcase is classified as a "Large" or "Large Check-In" suitcase, typically suitable for trips lasting 10 to 14 days. In terms of dimensions, a 78cm height usually corresponds to a capacity of approximately 90 to 110 liters. When flying, it is important to check the "linear dimensions" (Height + Width + Depth) rather than just the height; most international airlines have a standard limit of 158cm (62 inches) for checked baggage. A 78cm bag usually fits within this limit (e.g., 78 x 50 x 30 cm = 158 cm), but you must be careful with "expandable" models that might exceed it when fully packed. While the size is standard for check-in, the biggest risk with a 78cm suitcase is the weight limit. Because it holds so much, it is very easy to exceed the common 23kg (50lb) allowance, leading to expensive "heavy bag" fees. Travelers should always use a luggage scale with a bag of this size. It is also worth noting that a suitcase this large can be difficult to fit into the trunks of smaller European rental cars or to navigate on narrow cobblestone streets, so it is best reserved for long-stay vacations or families sharing a single bag.