Treatment Regimen: The couples will be randomized to one of two condom use sequences (WC then FC2 or FC2 then WC). Four condoms of each type will be used by couples over two 2-4 week periods. For first period, one set of pre- and post-coital vaginal swabs will be collected around unprotected intercourse. For each coital act where a condom is used in the period, pre and post-coital vaginal swabs and a post-coital condom swab will be collected. A Condom Use Questionnaire will be completed after each condom use. An Acceptability Questionnaire will be completed at the end of each period. After a follow-up visit, these procedures will be repeated with the second 4 condoms, without collection of vaginal swabs at unprotected intercourse.