The D'Addario XTC45 XT Classical Guitar Strings are designed to offer the durability of coated strings without compromising the natural tone and feel of uncoated ones. This normal-tension set combines D'Addario's renowned Pro-Arte nylon treble strings with silver-plated copper-wrapped composite basses. The proprietary XT coating provides advanced corrosion resistance, extending the lifespan of the strings while maintaining dynamic responsiveness and a pure classical tone. Ideal for classical guitarists seeking a balance of rich tone, comfortable playability, and extended string life.