I am a real big fan of bungee like onaholes and suspension type onaholes.
You can research other places for pictures of the internal structure, but basically there is a middle sleeve section that is suspended by nubbed cords from the main structure.
Technically this provides intense sensation because of disconnection and feeling that you are with someone else.
Entry was nice and feels good, but this is where it ends for me.
Many girls say my penis is larger than normal and I found the middle sleeve too tight and narrow, sometimes perhaps entering the side rather than middle stimulating chamber.
So if you have small straight penis, this could be really good.
If your penis is a bit big or curved, not so good, because you will miss the part or too big to enter the good part.
The entrance is very nice and looks authentic and fun during sliding in and out, feeling for me, not so good, but others may prefer it and could potentially be your perfect hole if the penis is right.
But the complexity and what they achieved is quite impressive for the size and price.
Looking forward to a slightly bigger version.