Free Size (One Size Fits Most): The underwear is designed with stretchy materials and an accommodating cut to fit a wide range of body sizes, often covering S-L or M-XL.

Mix Colors (Assorted Colors): The package or batch contains a variety of different colors, meaning you won't get all of one color, but a random assortment chosen

it's stretchy, one-size-fits-most underwear available in a variety of randomly bundled colors.