Stored value alone is not a Nozomi ticket. Purchase a Shinkansen product first; a linked IC card can then act as the gate key.
Tokaido–Sanyo Shinkansen
Nozomi: ticket, seat and baggage rules
Tokyo · Kyoto · Shin-Osaka · Hakata
30-second answer
What you need before boarding Nozomi
You need a Shinkansen product covering the basic fare and limited-express portion.
Non-reserved cars normally exist, but all Nozomi seats are reserved on designated peak dates.
Reserve a seat with an oversized-baggage area or compartment before boarding.
Why this catches travelers out
Nozomi uses the 160–250 cm advance-reservation rule. Hayabusa and Kagayaki do not use this baggage reservation system, even though all three are Shinkansen services.
Measure before booking
Add all three dimensions
Measure length + width + height. The total determines whether the Nozomi oversized-baggage reservation rule applies.
160 cm or less
ordinary storage Over 160–250 cm
reserve baggage seat Over 250 cm
not allowed
ordinary storage Over 160–250 cm
reserve baggage seat Over 250 cm
not allowed
Smaller bags normally use the overhead rack or foot space. The dedicated oversized area or compartment is tied to the applicable reserved seat.
Do not want to carry it?
Check storage at your station
If the bag is impractical to take onboard, use the separate station guide to check lockers and verified luggage-storage alternatives.