The Diva Cup is a menstrual cup. (Is this the right forum?) Anyways, I've had mine for a few months now and I don't know what I would do without it. It never leaks, I'm never aware of it and you can wear it for up to 12 hours. It's reusable so it's great for the environment, too. Don't worry, you can also boil them. Anyways, just wanted to share. Check it out, I highly recommend it.
http://www.divacup.com/
http://www.divacup.com/