Ernie Ball 2047 Earthwood Silk and Steel Extra Soft 80/20 Bronze Acoustic String Set  (10 - 50)
Made with an 80/20 bronze alloy wrap, along with a layer of silk between the wrap and steel core. The silk produces a more mellow sound and makes the string feel more comfortable while reducing finger noise. Gauges .010, .014, .020w, .028, .040, .050