A controversial subject, my answer would be no. And that's why
buying online is a pure lottery. I believe a comfortable shoe relies
on the mechanical construction of the shoes, such as how flexible
it is. Also the materials it's constructed out of dictate the heat,
and moisture the foot will feel. Only by trying shoes on in-store
will you gain a clear insight as to whether a shoe will be comfortable
or not. Feet come in a huge selection of proportions, finding a
anatomically perfect shoe from a sizing chart is impossible.