William Poundstone, author of “Priceless: the Myth of Fair Value and How to Take Advantage of It” notes this on his blog:
Jim Daniels, vice-president of marketing for Trojan, confessed to the New York Times that Magnums are basically the same size, just a little wider in the middle.
The NY Times article Poundstone cites says:
For all the connotations, however, it turns out that Magnum is not so large. It is the same length as standard condoms, with the same circumference at its base, Mr. Daniels said. “Some people feel more comfortable with that width, but you don’t have to be an overly endowed man to use a Magnum and enjoy it,” he added.
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