![Martin Authentic Acoustic Flexible Core Phosphor Bronze String Packs](https://www.forsyths.co.uk/383631-medium_default/martin-authentic-acoustic-flexible-core-phosphor-bronze-string-packs.jpg)
Martin® Authentic Acoustic® Flexible Core strings are designed to reduce finger fatigue and allow huge bends. They feature a lighter gauge version of our Superior Performance core wire combined with heavier wrap wire to deliver a full and balanced tone with increased flex and playability.
Martin® Authentic Acoustic® Flexible Core strings are designed to reduce finger fatigue and allow huge bends. They feature a lighter gauge version of our Superior Performance core wire combined with heavier wrap wire to deliver a full and balanced tone with increased flex and playability.