From Journey:

"Patented removable neck system allows this carbon fiber acoustic travel guitar to collapse into an airline carry-on size case for the traveling musician or backpacker. Carbon fiber composite material provides durability and can function in any climate without cracking, warping or changing tone.

The Overhead carries a clear resonant tone with surprising volume and bass. The relatively small body size is able to carry a full sound through the use of a Manzer wedge which increases the air volume while keeping the top of the guitar close to the body for comfort. Also provides access to the upper frets through a Scoopaway™ at the neck.

Also includes tone-enhancing premium-grade bone nut and saddle, along with ebony bridge pins.

Soundboard: Unidirection Carbon Fiber with gloss finish
Back & Sides: Carbon Fiber Twill with gloss finish
Case: Custom-designed travel guitar backpack engineered to fit in airline carry-on compartment (see specs here)
Pickup: Proprietary under-bridge transducer pickup system"