Extended vulva massage

Can anyone recommend, from personal experience, a water based lubricant for an extended vulva massage.
I have a video "The art of extended orgasm for men and women" in which the presenter says that she can orgasm for over an hour while her vulva is massaged. I would love to give such a massage but obviously the vulva could become sore over that time, hence the request for lubricant advice.

Lube

i use a lot of duralex lube, the basic one, tried the 'tingly' etc. etc, but my bf didn't like it, whatever you use make sure it's a water based one
best luck
belladonna

Over an hour!!

An orgasm for over an hour, that sounds like something worth trying!

Try this

I just got a simple personal lubricant from the sex shop, works fine for regular and anal. Try something new and see what happens.