Praise be! I've finally found a cute & comfy walking sandal. Runs true to size...I usually wear a 7 1/2 in a dress shoe or an 8 in an athletic shoe. I ordered a 7 1/2 & they fit just right. I like all the straps that allow fit to be adjusted to your comfort. The back heel strap felt a bit low at first, but once everything is adjusted right it holds your foot in place just fine. The material the straps are made out of seems a bit stiff at first, but after walking around in them it seems to be less stiff and conforms to my foot.  I have had no issues with blisters or chafing.  The only part that is a tad snug is the strap that goes over the front of the ankle...not uncomfortably so though.  I like that they are waterproof so I can go kayaking, etc in them.  I think I'd be comfortable going on long walks in them, but I probably wouldn't go hiking in them as I don't like getting grit, pebbles, etc. in between my feet and my sandals.