Cervical barriers are widely used in England and in some countries, including Germany, Austria, Switzerland, and Canada, Lea’s Shield has been available over the counter since 1993 (Long,
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(a) The FemCap is a silicone cup shaped like a sailor’s hat that fits securely over the cervix. (b) Lea’s Shield is a silicone cup with a one-way valve and a loop for easier removal.
2003) 
. However, in less-developed countries they are used infrequently, probably due to insertion problems and the necessity of checking cervical placement.