Instruct: Classify a review as either positive or negative.
Query: Rockport Men's Prowalker Walking Shoe,Black,10 M

I have been wearing Rockport shoes for years and have always loved them. I bought a 10M, like all of my other Rockport shoes. As soon as I put on the shoes, my feet both ached in the balls of my feet. I thought they needed to be broken in, but after wearing them two days, no change. They are marked M, but are actually narrow. I intend to return them!