Thank you GLC!

I just checked the sizes in my running shoes, and they are inconsistent...
The label on my Nike Lunarglides says: US 7.5, UK 5, EU 38.5
The label on my Merells says: US 8.5, UK 6, EU 39
For ordinary (non-running) shoes I buy 38.

Both are a tad big for me. As the Altras are supposed to run small, I'm not sure if I'd need 8's or 8.5's ... or mabe even bigger ones?