The original painting was made with watercolor on watercolor paper and is 7" x 10"
This isn't the #1 cat in the word, it's just the first in a series
But Mene (pronounced "Menny") was a good cat
The print size options correspond to common frame sizes, so you can just plop your print right in a frame, no need to mat it.
Printed locally (for me, at least) in Orlando, FL with archival, acid-free ink on archival, acid-free paper so they are sure to outlive your interest in them.