Thanks - leather straps in particular tend to have a minimum and maximum length, and shorter or longer straps in particular can often not fit some people.
I own a Mk3 which is very similar. Incredibly fun and comfortable bass to play, and sounds spectacular. Easy to see why Nathan East favours them as a recording session bass!
These are excellent, I have used mine several times when flying. Works well for electric guitars too, and I usually pack some clothes in as well.
@Burns-bass is also a superb bloke with whom I have dealt several times.