It really depends on the manufacturer of the shoe, as many size shoes a little differently ... but generally, a US 10 is about a Euro 44.
For example. I wear a US 8-8.5 dress shoe or tennis shoe. I wear a Sidi 42. I wear a Northwave 41 (Evolution) and a Vittoria 41.5.
I've never tried on a Detto, so I don't know what my equivalent size would be there ...
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Steven L. Sheffield stevens at veloworks dot com veloworks at earthlink dot net aitch tee tea pea colon [for word] slash [four ward] slash double-you double-yew double-ewe dot veloworks dot com [four word] slash
> From: "David Goerndt" <davidg@iag.net>
> Date: Sun, 17 Jun 2001 10:00:47 -0400
> To: <classicrendezvous@bikelist.org>
> Subject: [CR]Euro shoe sizes
>
> Anyone know the equivalent Euro shoe size to a US size 10. There is a pair
> of Detto Pietro shoes on ebay that list size 10, but no Euro size. I have a
> pair that are size 44 that are too tight and was looking for a larger pair.
>
> David Goerndt