"I consulted engineers, gynecologists and psychologists to help in the design and make sure it was safe," she said.
After the trial period, they'll be available for about $2 a piece. She hopes the women will report back to her.
"The ideal situation would be for a woman to wear this when she's going out on some kind of blind date ... or to an area she's not comfortable with," she said.
The mother of two daughters said she visited prisons and talked to convicted rapists to find out whether such a device would have made them rethink their actions.
Some said it would have, Ehlers said.
Critics say the female condom is not a long-term solution and makes women vulnerable to more violence from men trapped by the device.
It hurts, he cannot pee and walk when it's on. If he tries to remove it, it will clasp even tighter
--Dr Sonnet Ehlers
--Dr Sonnet Ehlers
