Abstract: The present invention provides a contraceptive prophylactic condom to prevent the transmission of seminal fluid during sexual intercourse and/or fellatio comprising a closed end and an open end opposite the closed end, an intermediary portion between said ends generally in a frusto-conical shape and/or mimicking the size and shape of a glans penis of the male sex organ, wherein the open end forms a circumferential leak proof enclosure of its periphery about the glans penis portion at a position above the sulcus, and wherein said condom contains a securing means on its inner surface effective to maintain a non-movable position on the glans penis during intercourse or fellatio.