What's not so obvious is the smoke and mirrors behind the Magnum brand. 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 regular Trojan, the Magnum, and the Magnum XL all measure 2 inches wide at the base. The base has to cinch snugly to keep the thing on. There's a slight difference in length. A Trojan Non-Lubricated is 7.8 inches long, vs. 8.12 inches for Magnum. The 0.32-inch difference qualifies as a rounding error in anyone's night of pleasure. As to the Magnum XLs, well, they're 8.12 inches long, too.
The difference is in width of the shaft. Measured at the head, Trojans are 2 inches wide, Magnums are 2.5 inches, and Magnum XL's are 2.75 inches. Well okay, that's a difference. But since all the condoms taper to 2 inches at the base, the Magnums have a rather bizarre shape. It's less a beer can than a very fashionable cocktail shaker of the 1930s.
A rival brand, LifeStyles, has a "King XL" size whose vital statistics are virtually the same as the regular Trojans. There's no policing of the XL designation. And that's probably fine with all parties concerned. This is America, the land where any man can be an XL. All it takes is a little extra cash.
there you have it, straight from guy who makes magnum himself.
there is effectively no difference between normal condoms and magnum condoms. ---