Contributor 
16,248 posts
5,464 reviews 
2,298 helpful votes How large is it?
Contributor
37,480 posts
249 reviews
335 helpful votes Carry on suitcases are ok. The total dimension has to be less than 160cm if you want to use the overhead luggage rack. Anything bigger needs to go to the luggage space at the back of the last row of seats and it requires a reservation.
Contributor
71,791 posts
64 reviews
142 helpful votes Our suitcases are 24 inches x 15 inches x 11 inches which translates to 60.96 cm x 38.1 cm x 27.94 cm. We also have small daypacks.
Do you think these will work?
Thank you.
Contributor
37,480 posts
249 reviews
335 helpful votes >>Do you think these will work?<<
A piece of cake!
Dr. Shibuyakko - thank you!!
Contributor
16,248 posts
5,464 reviews
2,298 helpful votes An aircraft carry in size luggage can be stored in Shinkansen overhead bin.
ETflyer - thank you!
Thank you Dave for the link