Martin® Authentic Acoustic® Flexible Core strings are built for comfort and expression, helping reduce finger fatigue while making big bends easier. They use a lighter-gauge Superior Performance core wire paired with heavier wrap wire for a rich, balanced tone with added flexibility and smooth playability. Designed and precision-made by Martin, these strings reflect the high standards and craftsmanship that define our acoustic guitar sound.

It isn’t just about flexibility; it’s about bending the note till it rings true. Martin’s Flexible Core strings feel soft to the touch, making them ideal for beginners. But don’t be fooled by comfort! They are for professional players too. 

Martin starts with their highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistance. When coupled with the highest quality wrap wire, you get consistent true tone that you can count on song after song. With Flexible Core strings, you get total flexibility and total control.

Martin Authentic Acoustic Flexible Core strings reduce finger fatigue; they are ideal for fingerstyle and note bending and offer comfort without sacrificing tone.

Specifications: 

Guitar Type: Acoustic Guitar

Number of Strings: 6

Coated: No

Gauges: .011, .013p, .023w, .028, .038, .047

Core Material: Steel

Winding Material: Silk and Phosphor Bronze

Winding Type: Round