The Sugar Slaps are designed to emulate gut strings (for slappers, particularly) in a durable, affordable synthetic option. The early feedback on these strings is that they do it very well - players report that the strings feel very much like gut strings under the hands, and have many of the favorable aspects of the tone without the hassles of oiling gut strings (or the high cost of them!)
They have a lighter-than-average tension, and while they have the sound of gut, they do have a better overall intonation, especially on the lower strings, where unwound guts can get a little wonky, pitch-wise.
They really hit the mark for Rockabilly and Roots styles, old-timey music, Bluegrass, and old-school jazz contexts. Some players are even saying that they come the closest to gut strings of any synthetic strings they've tried!
Aquila strings are made in Italy.