From Martin:Martin’s next generation Lifespan 2.0 strings are engineered using a new, patented technology only available from Martin. This technology was developed to protect the core wire and the wrap wire to prevent...

This bundle includes three packs of Martin MA150T Authentic Acoustic Lifespan 2.0 80/20 Bronze Medium 13-56 strings. From Martin:Martin’s next generation Lifespan 2.0 strings are engineered using a new, patented...