I have been wearing Nike Cortez since I was 30 years old and now I am 77. This is the only sneaker that I have ever worn. The new Cortez quality is the same but you suggested that I go up 1/2 size. This for me was a mistake. They are too big, I will try them on with heavier socks and see if this helps. I would recommend that customers order their regular size. Very good value for the money.
