Brooks: Manufacturer advice
There is no verified brand-wide fit offset or reproducible wearer distribution in this dataset. Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.
Ghost 18
The US men's Ghost 18 page lists Narrow (1B), Medium (1D), Wide (2E) and Extra Wide (4E). These are published width options; colour and size availability must be checked on the product page. The Brooks men's chart supplies size-label references, not measured foot length. No model-wide size correction or wearer consensus has been established here. This review covers Ghost 18 family 110493, not Ghost Max or earlier Ghost versions.