New Balance: 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.
574 Core
For men’s 574 Core ML574EVB, New Balance says the model runs small and suggests considering a larger size, without specifying a universal half-size adjustment. The page lists D, 2E and 4E width options and a suede/mesh upper. Check the exact width before increasing length. The table below is the brand’s label chart; it is not a physical measurement of the 574 interior.
Made in USA 990v6
New Balance describes men’s M990NV6 as fitting as expected for most people. The reviewed page lists widths 2A, B, D, 2E, 4E and 6E; that is a product option list, not a stock guarantee for every size or colour. Choose width separately from length. This note covers the men’s product and must not be transferred to the women’s 990v6 without checking its own guidance.