On the Japanese Shinkansen (Bullet Train), your luggage storage location depends entirely on the size of your bag. In 2026, for small to medium bags (total dimensions under 160 cm), you can use the overhead racks or place them at your feet. A supportive peer "rule" update: if you have oversized baggage (total dimensions between 160 cm and 250 cm), you must reserve a "Seat with Oversized Baggage Area" or an "Oversized Baggage Compartment" in advance. These are usually the last row of seats in a car. If you board without a reservation on the Tokaido, Sanyo, or Kyushu lines, you will be charged a 1,000 JPY penalty fee, and the conductor will move your bag. Bags larger than 250 cm are strictly prohibited; travelers are encouraged to use Takkyubin (luggage delivery services) to ship large suitcases directly to their hotels, which is the "pro-traveler" move in 2026 to enjoy a hands-free, stress-free journey through Japan.