Thanks, but the ones you get when you google butterfly bars are set back substantially
This sort of thing is typical.
The main hand grips are set back about 5-6cm from where they would be in the earlier pic I posted. I like a long reach and certainly do not want it reduced further
You can just flip them over!
There are a whole range of trekking and butterfly bars, but I think the variation you are looking for has a straight bar, and extended curves, so not a true "butterfly", more like "Bullhorn" MTB bars
WIthout detailed pictures, the closes I can find is the Humpbert Sport, these are a handlebar:
With various bar ends
This design is easier for fitting brakes, gears etc which can have problems negotiating the curves
End product (this shows the adjustable bar) is like this:
... and as an added bonus, for trains and hotels: