Is there such a thing as a reusable version of a pullup.

[MrsGokWantsatidyhouse]

That's it really. DC3 is potty training at the moment and is not quite ready for pants but I am loathe to put him in dispo pull ups when I go out.

Depends whether you want a nappy substitute that will hold a fair bit, or just training pants type ones that will hold an accident.
My top pull ups are Swaddlebees pockets or AIO and Ecobubs everyday pockets, best training pants are Blueberries(but expensive & being discontinued) & Imse Vimse, try Babykind

Cheers that's brilliant. Thank you for the pointers.