DMC’s Floche is one of those “secret menu” threads. It isn’t well-known, it’s isn’t carried by lots of shops, but it fans adore it.
DMC wants you to know more about this lovely thread, and they have devoted a column in their blog to it. (https://dmc-threads.com/dmc-floche-embroidery-thread/)
Learn about it and then go track some down to try.