I've seen these as a guitar but never a bass. The Traveler Escape MK-II is a 32"-scale acoustic/electric travel bass is equipped with an L.R. Baggs Hybrid-Element preamp for playing directly into headphones or an amplifier. At 5 ¼" lbs. and 36" long, this bass is the only carry-on luggage you'll need.
Price is $295 OBO
Price includes black custom MK-II gig bag
FULL SPECS
http://www.travelerguitar.com/discontinued/item/mk-ii-bass