A specific smaller-size route
The listing provides a size 6.5 offer rather than a new model separate from the black women’s 8 and 9 entries. Availability of a smaller number does not prove a proportionally narrower last. Use the chart for this variation instead of assuming a small protective shoe will fit like a casual flat.
Check the selected pair before a shift
The black 8 and 9 links show other size options, not performance upgrades. For a smaller foot, check where the opening and instep sit once the heel is seated. A shoe can have the right overall length yet place pressure in the wrong area.