Shoes

Is it true the way they design women’s shoes prevent odors?

I over heard these women on the train talking and they were saying how when it comes to certain types of shoes like the ballet flats and high heels pumps, since they are open around the top of the foot cause them not to retain an odor or smell. Is that true?

I would think that would not be true since the sweat glands are on the bottom of the foot. If that was their intent for the design I think there are different more effective solutions.