i saw a thing about those on The Learning Channel (TLC) about a year ago
they're skin is like sorta rubbery aparently but the doll is supposed to be pretty lifelike (i dunno how that is because this doll always stays quiet lol)
*edit*
isn't it a bit freaky knowing that some guys will have sex with something that isn't moving...........
They move. They have a robotic/animatronic model with gyrating hips. They make sound too. There's one model that has different response depending on which "entry" is being used. ...um, or at least that's what I heard.
But seriously, it is kinda pathetic. I mean if you have $6,000 to blow and you still can't find a girl to go out with you....geeez. The money might be better spent on plastic surgery.