I can't compare these strings with other flatwounds since it's the first time I tried them, but I'm pleasantly surprised with it.
* Feel: I like the smoothness of the string and the way fingers slide along. It gives a bit of a "fretless" feel.
* Tension: just right for BEADG tuning. The tension is even and strings are not overly tight.
* Sound: Although flatwounds are supposed to sound "warm" and "jazzy", they actually sounded brighter than my not-so-new set of roundwounds that I had previously on that bass. Maybe because of the chrome steel, but there is a nice zing in the sound that I did not expect from flats. It's surely not "only for jazz".
* Looks: string ends have black braids, looks very nice!
Cons: all strings are packed in one plastic bag and different gauges are not marked in any way. You have to look very carefully not to mix e.g. a .085 and a .065 string.