Over time, the muscles are strengthened simply by keeping the weight from falling out.
While these devices can be helpful, some women found them uncomfortable and stopped using the weights altogether.
The key is finding the right approach that works for you.

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Communication with your healthcare provider is crucial to tailoring a treatment plan suited to your specific needs.
Other Ways to Improve Bladder Control
Better pelvic floor strength is just one aspect of incontinence management.
Doing these exercises at the same time will not achieve the goals and can further impair your control.
Herbison GP, Dean N.Weighted vaginal cones for urinary incontinence.Cochrane Database of Systematic Reviews2013, Issue 7.
“International Urogynecology Journal06/2008, Volume 19, Issue 6, pp.
Perkins J, Johnson CM.
“Vaginal Weights for Pelvic Floor Training: a Multiple Participant Case Report.
“Physiother Theory Pract.2012 Oct;28(7):499-508. doi: 10.3109/09593985.2011.653708.