US: 9-2E to United Kingdom Size 8-AA

US: 9-2E: Corresponds to a foot length of 26.8 $\text{cm}$ (10.55 $\text{in}$), ball width of 10.6 $\text{cm}$ (4.17 $\text{in}$), acceptable ball width range between 10.3–10.9 $\text{cm}$ (4.06–4.29 $\text{in}$), and fit classification Wide (9-2E / EE).

United Kingdom Size 8-AA: Corresponds to a foot length of 25.2 $\text{cm}$ (9.92 $\text{in}$), ball width of 9.3 $\text{cm}$ (3.66 $\text{in}$), acceptable ball width range between 9.1–9.5 $\text{cm}$ (3.58–3.74 $\text{in}$), and fit classification Extra Narrow (9-3A / AAAA).