The Martin OO-DB Jeff Tweedy Signature Acoustic Guitar was designed in collaboration with Grammy Award winning Wilco front man, Jeff Tweedy. It's Martin's first Custom Artist model that is entirely FSC Certified, an important distinction for both Tweedy and Martin. The guitar is a traditional 14-fret 00-size with a slightly deeper body. The neck has a modified V-shape and a scale-length of 25.4", perfect for strumming or fingerpicking. All of the body woods are FSC certified mahogany with a dark sunburst finish on top. Even the top braces are from FSC certified European spruce. The interior label is numbered and signed by Tweedy himself.. This product comes with a case.