2 in 1
If you have been using metal core double bass strings and are looking for a more mellow sound then Innovation bass strings are probably what you have been looking for.
Innovation Psycho Slaps (Golden Slaps) are part of the Braided Nylon Core Sets suitable for Rock-a-Billy, Bluegrass, and Jazz Pizzicato play.
Innovation Psycho Slap (Golden Slaps) Strings are a Medium Tension Clear Nylon Tape Wound Set. All Innovation strings feature non-metallic cores.