As we've explained in the past, like here, with proper use, condoms actually break very rarely. The common mythology that condoms are flimsy and break all the time is just that: mythology, not reality. Different studies on latex condom breakage tend to reflect a breakage rate of around .4%, or only 4 breaks in every 1,000 uses.
I get the impression that some, if not many of of our users think that condom failure rates are the same as condom breakage/slippage rates. In other words, think that when we explain that in typical use, condoms are 85% effective, that means that 15% of condoms break.
It doesn't: that is NOT what those rates mean. I hate for anyone to be presuming it is and to panic about a potential pregnancy via condom use because of that misunderstanding.