US Letter Sizes:
US letter sizes such as XS, S, M, L, XL, etc., represent broader size categories. They provide a generalized idea of the garment's fit and are used in addition to numerical sizes.
For example, XS refers to Extra Small, S for Small, M for Medium, L for Large, and XL for Extra Large.
These letter sizes can vary between brands and designers, so it's essential to refer to specific sizing charts for accurate measurements.