Pick the odd pair:
Female condom - uterus
The female condom is a soft, loose-fitting polyurethane sheath. One end is a barrier that fits over the cervix. The other end is an open ring that stays just outside the vagina.They look a bit like an upside down plastic bags, which are inserted with the blind end directed inwards. They provide a barrier preventing the sperm ejaculated into the vagina from traveling farther into the female genital tract.