Thanks @Brad Johnson ! Good to know that it's a 1/2 size bag. I see a few 1/2 bags out there for $20. Do you need the extra width of the acoustic bag or do you think a 1/2 electric guitar gig bag might work?
For anyone looking for a ubass alternative, the corsair is great. I am on my third kala and 2nd GT microbass. My rebranded corsair from smallguitars.com is built to a much higher level of quality at a cheaper price than any ubass I've seen including the kala California which is an absurd price for basses that have such poor QC issues.
It looks like they only have pink mb-1s in stock, and at a little bit higher price than normal, but still can't best this little instrument.
1/2 size Bass Guitars: SmallGuitars.com - half size mini bass guitars
Ive been gigging small uke Basses exclusively for about 4 years now. I started with a kala 21", moved to a fretted 23" GT for the past few years and just did my first gig with a Rob Allen mouse tonight. A beautiful instrument that really combines the best parts of a uke bass with the best parts of a more traditional electric bass. The effective reach of the mouse is really short for a 30" scale. It feels just a tiny bit longer than the 23" GT Microbass. The special strings give it a similar tone to pahoehoes but with a more nuanced character.