Bit of a long shot, but looking for one of these if anyone has one for sale:
You will have more luck looking for rocking horse shite.
If you want a backpack then this is what people use.
I wanted a carry type bag so I bought this.
It’s not quite as long as stated so it’s a little tight only on the length.
I ended up getting the Club 500 backpack in the end, a sturdy bit of kit!