The coupling of Ernie Ball's Everlast nanotreatment with breakthrough plasma enhanced wrap wire provides added corrosion resistance and reduced accumulation of tone-robbing buildup and debris. Experience the first set of longer lasting strings that are worth playing with all benefits and no compromises. Ernie Ball's new state-of-the-art wire drawing process combined with patented RPS (reinforced plain string) technology dramatically increases tensile strength. Plasma cleaning provides improved corrosion resistance. Ernie Ball's patented Everlast Nano treatment repels sweat and build up. No flaking or difference in feel than traditional strings. Legendary Slinky Tone.