Durex is a brand of condoms made by a British company called SSL (now owned by Reckitt Benckiser) and very popular in the UK. They make high quality condoms used by millions of people every year.  

We often get asked "are Durex Comfort XL Condoms genuinely bigger condoms in comparison to regular sized condoms?". The Durex website describes Durex Comfort XL condoms as: 

"(our) extra large condom, designed to provide better comfort those who may need it in the bedroom. Larger than standard latex condoms for extra comfort"

so you would certainly expect them to be big condoms. After all, XL stands for "extra large".

So how much larger are Durex Comfort XL condoms exactly?

Well, according to the Durex website, Durex Comfort XL condoms have a nominal width of 57mm. But in comparison, according to the same website, a Durex Elite condom (which isn't advertised on the site as being large, or small) has a nominal width of 56mm.

So, there's just 1mm nominal width difference between a Durex Elite condom, and a Durex Comfort XL condom?

And length wise, most standard, non-XL Durex condoms are already 205mm long (8.1").

So are Durex Comfort XL condoms genuinely large condoms? 1mm difference doesn't sound like an awful lot. 

In comparison the largest TheyFit condom has a nominal width of 69mm - some 21% greater than a Durex Comfort XL condom. And our longest condom is 240mm long (9.4") - 12% longer than a Durex Comfort XL condom.

Durex Comfort XL
Why? Because we believe that a better fit, means better sex.

If you'd like to learn more about getting the perfect fitting condom for your needs, please click here.

Sources: 
http://www.durex.com/en-GB/Products/condoms/Pages/Durex-ComfortXL.aspx#0
http://www.durex.com/en-GB/Products/condoms/Pages/Durex-Elite.aspx#0
{as of November 2012}