K&c30's let's hope someone has and that they'll chime in!
LadiesMan and LIL_KNOWN69 I use something very similar (apparently it's vinyl, not latex as I write in the OP). I got it many years ago when I visited London, but it's not a Lovehoney product. It really does work, but because of my back I cannot sleep on it and it ruins some of the fun if we have to put it on / take it off whenever we want to play.