I had ordered two pairs of 7.5 M in  black and brown color. Both are labeled with 7.5 M, however, I can only fit into brown pairs  and feels very squeezed  in black. when I compared these two pairs, Black is about 1/4 inch shorter than brown. I had read others complaint about the incorrect size and the others had no problem with them. I think it really depends on what color you had tried on. Maybe different color shoes were made from different factories.