Great light gauge guitar strings. They sound a little softer than bronze or phosphor bronze strings, in the best possible way.
Fantastic playability, due to the silk inlays.
Thin strings like these are a very good match for a high quality, lively acoustic guitar.
Meaning, if you have an inexpensive guitar that may be a little stiff, heavy strings may be a good idea to drive the soundboard. If the guitar itself is well built and responsive, lighter strings like the Thomastik Plectrum 10s are a better option.