Snatched these up for a Canadian wedding and boy do I ever regret it. I walked about 6 blocks to grab some fancy dinner downtown and had to walk most of the return trip in my bare feet.
I found they fit true to size, but they rubbed my ankles something fierce and I've now got a nice little blister goin on my left ankle. Maggie didn't have this problem below, as she found them very comfortable. I think I may have gotten a size too large, so I suggest considering sizing down on these. I have a narrow forefoot with skinny ankles.
They may work for you - they didn't for me and I can't return 'em. SHOOT.