here is a website....
and here is what it says.... it might help.
Ying Yu Jade Ben Wa Kegel Balls
Ben Wa Kegel exercise balls improve the muscular strength of the vagina. Each use will increase the tone of the muscles that (1) stop the flow of urine, (2) cause clitoral erection during sexual arousal, (3) rhythmically contract during sexual orgasm and (4) support the bladder, uterus and rectum. Asian women have used these for centuries to tighten vaginal and bladder muscles while providing pleasurable sensations. These are in natural Chinese jade. Jade energy is highly associated with the body qi (energy) and promote good health. They are 20 mm round, smooth and highly polished. They are pure and natural A quality.
A Chinese doctor and I designed these to be the best size for women. He says that using the jade ben wa balls is "vaginal kung fu" because it strengthens and tones and gives that part of the body more power and feeling of well being. Doing kegal exercises is easier when you have an object for feedback about what you're doing. Most people who do kegals aren't doing them with enough effort, and these can help. And jade is related to the body qi, energy. Jade energy is healing to the body, and jade qi and body qi work together. That's one of the reasons Chinese people love jade. It's natural stone, smooth, and is compatible with the body.
The original ben wa balls had mercury inside that was supposed to make them rock around inside a woman's vagina while she did "housework". Then she supposedly got so turned on so that when hubby came home she'd be ready to go at it. After the mercury leaked and killed a few women, they were outlawed. Most of he ones made today are metal balls that don't have anything inside. Jade ben wa balls are heavy and natural and energetically compatible with your body.
To use the jade Ben Wa Kegel balls, insert both of them and use the vaginal muscles to keep them inside.Kegel exercise is intended to improve the muscle strength. Locate your pelvic floor muscles by imagining you are interrupting your urine stream. Slowly tighten and hold for 10 seconds, then relax for 10 seconds. Repeat 10 times. Next, try a quicker squeeze and release of the same muscles, which is a faster move that works different muscles. Squeeze and release in rapid succession 10 times. Do one set of fast and one set of slow kegels each day, working up to three sets of both daily. Ben Wa balls give you feedback because you can feel the balls moving.
Some women report that they enjoy the subtle stimulation produced by wearing Ben Wa Balls as they go about their daily tasks, others report that they only enjoy using them during partner play. The proper positioning of the balls, if you are aiming for g-spot stimulation, would be up in the front of the vagina. The only place you should not aim for is up behind the cervix toward her back. She's not likely to feel them very much, and they may not be able to move around her vagina very well.
They can also be used during intercourse. Both men and women have described using Ben Wa balls during intercourse increase the pleasure for both of them.
To remove, squat down, and sweep your finger to the back of your vagina.
To clean, wash after using with soap and water, or boil them, and wrap them in a soft cloth.
No returns on these, for obvious reasons!.
The American Urological Association will include Ying Yu Jade's deep green ben wa balls in their exhibit "Sexuality:Perception and Performance" in the Urologic History Museum in Linthicum, Maryland.
These are pure and natural jade and the color of the balls you receive will vary.