Same-size vore
From Vore Wiki
Same-size vore is a form of vorarephilia in which predator and prey are of comparable sizes. It is most often associated with human or furry vore - for instance, a human being swallowing another human without the latter being shrunk. Such vore generally results in the predator having a hugely swollen belly, and in lengthy digestion.
Since it is impossible for such acts to occur in real life, elements of fantasy are involved to enable suspension of disbelief. For example, the predator's jaw may "unhinge". Alternately, the mechanics of the process may simply not be explained at all.
Same-size vore is the opposite of both macro vore and micro vore.