They feature a fabric liner to absorb leakage and come in five colors — including white with lace trimming. The full release (sorry) is after the jump.
Update: A reader writes,
As a white lady married to a Korean American man my first experience with these was when they were given to me as a gift; by my future mother in law at our first meeting! I notice the creator is a Korean woman, so she has simply updated and westernized what is a pretty common item in any Korean underwear store. Smart woman.
Oh, and I can say that they really do offer extra protection while still being breathable.