In 2026, Japan's luggage rules are strictly enforced, especially on the Shinkansen (Bullet Trains). You are allowed two pieces of luggage (30kg each), but if your bag's total dimensions (Length + Width + Height) are between 160cm and 250cm, you must reserve a "Seat with Oversized Baggage Area" in advance. This reservation is free if made beforehand, but if you board without one, you will be charged a 1,000 yen fee and may be required to move to a different car. Bags with total dimensions exceeding 250cm are not allowed on the train at all. For 2026 travelers, the "Hands-Free" solution is the Takkyubin (luggage delivery service), which can send your large suitcases from your hotel in Tokyo to your hotel in Kyoto for about $20–$30, allowing you to travel with just a small backpack and bypass the Shinkansen luggage stress entirely.