The stuffin is 34cm long, 14cm wide at the narrow bit and eeewww hold on a moment there is biscuit on my tape measure!!!! Georgia was playing with it before, yuk
Sorry, back to the stuffin! It's 18cm wide at the widest point. Don't know how this compares to a large stuffin????
It works well in the medium heiny, haven't tried it in a large one.
Hope this helps, are you going to make some inserts?