Clarks are so comfortable, and these are no exception.  Nice arch support and all-day comfortable.  I have foot issues so I tend to stick to more expensive brands to get better support and a better fit.  Had a bit of breaking in - the first time I tried them on I thought they felt too snug.  Tried them on again with thinner socks and wore around the house a bit; started to feel better.  I don't normally allow for a "break-in", but since they are leather, I gave them a chance.  They felt better second wearing, so wore them out of the house all day with trouser socks; felt great and no longer too snug.  Actually think now I could wear mid-weight socks and they'd be okay.  Agree with whoever posted they run half size small - I generally wear 9.5, got these in 10 and they're fine.