GHS says:
 
Coated acoustic guitar strings don't have to be dull and lifeless!
GHS Infinity Bronze acoustic strings are made differently. We coat the 80/20 cover wire and then wind it around a hex core. Adding our cryogenically treated brass-plated plain strings gives our Infinity Bronze the character and nuance of uncoated strings; a vibrant sound that's full of life.
Months after typical acoustic strings start to fade, you'll still be playing with feeling. Infinity Bronze gives you exceptional long tonality without any compromise to your sound.
Why Should You play Infinity Bronze?
You need the longevity of a coated string, but want the tonality of an uncoated string
You want an acoustic string that can withstand outdoor summer festival season
You're a casual player that's looking for acoustic guitar strings that sound great even if the guitar has been sitting around for months