Is the vibrating one safe?

My thoughts
Vice can give even and uneven vibrations at three level of intensity. The uneven ones may be better as the constant ones desensitize the area. As it is suspended in the body it is safer than an object moved by hand.
It is a chubby chap, so may be difficult to insert.

What's the best way to get progress with the helix? I clench and unclench but of course one gets tired over time.

Bare in mind, its a huge device and not all people are built the same, my ass does not accommodate such a thing without discomfort.

Hint to the aneros company: make a smaller one. I believe in you.

Well, I love taking it in the ass, so it wouldn't be a problem for me.

Is the Vice the same size as the Progasm, or is it a little bigger?