What is a 10c in American size?

In American shoe sizing, a size 10C typically refers to a men's shoe width. The "C" denotes a standard width, as shoe widths are categorized into letters, with "C" being narrower than "D" (standard for men) but wider than "B" (narrow). For women's sizes, a 10C would usually correspond to a larger size, as women's sizes are generally about 1.5 to 2 sizes smaller than men's. It's important to always check specific brand sizing charts, as there can be variations.