Does it exist? A penetrable butt plug.

Looking for a hollow/insertable void space butt plug where i can then insert additional toys (or my dick) once it is fixed inside my partner’s butt. I like the idea of inserting something soft and then sliding in additional objects friction free.

This is hard to search because I’m not sure the most descriptive term. I found some hollow plugs but the options are limited, and they seem to be more rigid whereas I want something soft like a fleshlight. Wondering if others have explored or found this kind of toy.

Failed search terms, fyi: Fuckable butt plug Ass pussy