there are several reasons why a condom would break: too old. modern condom wrappers have a date after which the condom should not be used. improper storage. heat damages latex condoms so they should not be kept in a hot place such as a car glove compartment or wallet. not enough lubrication. additional lubrication is always needed for rectal sex. it may also be needed for vaginal sex. the lubricant should be water-soluble such as ky jelly. the wrong kind of lubricant. lubricants that contain oil -- such as vaseline baby oils and vegetable oils -- should not be used with latex condoms since they weaken the rubber. too small. try a larger size. partner too tight. use an extra strength condom and more lubricant.
what causes male condoms to break?