I preferred in inside out for better stimulation. And it did stay on in my partner's ***. It was way more length than I needed, so I cut off about an 1.5 inch just for the sensitive part of my shaft. The diameter and feeling were pretty good. It needed way more lube than my other favorite ************ toy, the so-called j/o glove (which is more of a flat oval with stimulation nibs). My own silly fault is that I didn't pay attention to its color when I ordered it. It's solid black and you can't enjoy watching yourself. A transparent version would be far more appealing. Of course inside someone it doesn't really matter, but for self-pleasure and viewing, please make a transparent version.