Totally uncomfortable for normal-high arch feet or if you just have a normal-high top of your foott.  This is the most painful and uncomfortable shoe I have ever worn. I thought maybe it would be a "get used to" situation or maybe the shoe will get loosen up with time, but no luck at all. I have been using them for more than a month now and every time I get home and take them off I get a big deep mark on the skin on the top of the foot (like a 3D tattoo) with a bunch of skin bumps (from the holes of the top of the shoe) and when I used them for long periods of time (5+ hours) I also get blisters on the outside of my little toes. This way far from being a "comfortable" shoe as they claim. I guess the "comfortable" part applies only for the classic basic crocs shoes, not this one.