Have a look at the eBay item:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=290231543976
I got these for the missus from the States but I never knew the size difference, I looked on the net but I was under the impression 5.5 was around 4… around 4 - 1:( so now the only choice I got is to post them back… this will end up costing me a small fortune as I gotta pay to post them to the US and pay for the exchanged pair back to the UK so I hope they sell and I can buy her a new pair.
The size is a 5.5 USA, this comes to size 3 UK or EURO 36, it seems they could fit up to a size 3.5 UK depending on your feet. Obviously you have the advantage of trying them on see how they feel.
Any question or offers etc let me know please but not in PM’s as I can’t receive any. Either post here or e-mail me at: [email protected]