How is the shield different from a cervical cap or a diaphragm?
The cervical cap is held in place by the cervix, thus, sizing the cervix is very critical in fitting a cervical cap. Incorrect sizing of the cervix can lead to dislodgment of the cap during sex. The Lea’s Shield is not held in place by the cervix, but rather by the vagina’s wall. Therefore cervix size does not play a role. The diaphragm is anchored in place by the pubic bone and the posterior fornix. Since this distance varies from woman to woman, the diaphragm must be fitted and sized in order to avoid dislodgment during sex. The Lea’s Shield works by volume and is held by the vagina’s muscles. It does not depend on the vagina’s length. Does the shield need to be measured and fitted? No. The Lea’s Shield is one-size-fits-all women with normal anatomy. How can one size fit every woman? The Lea’s Shield fits the vagina by volume. Once inserted, the air trapped between the cervix and the device will be vented out of the one-way valve, creating a tight fit (seal) between the vagina’s wall
