This is a striking 2 string fretless bass from Atlansia. It would make a good travel instrument as it folds to only 8cm wide by 6.5cm thick (although it is 101 cm long). The body and neck are a single piece of maple, with a folding maple strap supporter.

The hardware is innovative, as you would expect with an instrument from N. Hayashi. The string nut is a Hayashi patented adjustable type, the bass has combined tailpiece+tuners (see photo) desigined by Wilkson and Hayashi. The pickups are ATLANSIA ARSX2, individual click and turn pickups that go in like a lightbulb.   

The price quoted on Altansia's website is around $790, although you would have to check whether international shipping is possible.

Photo courtesy of Atlansia.jp