They say the best time to try new shoes is when your feet are tired. Such is my case. The package was waiting for me when I returned from work, where I was standing all day. I have them on now and will wear until bedtime. If they still feel good, I'll wear them on my walk tomorrow.If they feel good during the walk, I'll order another pair. These shoes fit like a glove. 7.5 US, inside shoe says size 38, extremely comfortable. I'm talking "slipper' comfortable. The band around the top is not restrictive and will probably be nice during a run, which I don't plan unless someone is chasing me. There is no rubbing anywhere. The parcel included a thin pair of socks that I've seen some folks wear with flats, but I never wear them because they always "shift" on me. It's nice to get a bonus, though. I'll update this review if I find these shoes do not live up to my expectation. Today, I am doing my happy dance.

So very comfortable. Great walking shoe. Top part is some kind of knit mesh fabric that feels very sock-like, so it doesn't put any pressure on any part of the top of the foot, which means no blisters or rubbing anywhere. I imagine it would be a good summer shoe to wear without socks, but I haven't tried that yet. Bottom has decent cushioning. As for sizing, I ignored the listed US/Euro sizes and went by measurement and fit turned out well. I usually wear US size 8 and ordered what they have listed as 8.5. The size inside the shoe says 39. The inside footbed feels a little narrow, so if you have wide, flat feet you might want to beware.

EDIT: 6 months later and I have worn these so much that I've worn off all the tread on the soles. I am ordering another pair of the same exact ones. They have been great in hot weather and do not make my feet smell when worn without socks. I've thrown them into the washing machine (wore them for hiking) and they've come out fine.

Stretchy uppers make this a very comfy shoe. You need a finger to slide them on, but once on, go ahead and run through the airport! Super duper shoe. Price is amazing. Stylish and lightweight.
Wear them on vacay. I can't think of a downside.
Airy uppers are not for winter wear, but grab a pair of socks and just maybe you're golden.

Have not walked long distances in the shoes yet, but overall fit is good. As of now, probably won't wear thick socks - not uncomfortable, but a bit too snug for my tastes. May eventually wear them once I've broken the shoes in more.
The insole in the right shoe was the wrong size due to a very visible gap (~1cm) between the insole and back of shoe. Insole in left shoe was closer to the correct size, but overall still too small. Walked around the house with the insoles - knew they wouldn't do.
Decided not to return the shoes (cuz I'm lazy, was expecting something to be wrong, and couldn't find other problems with the shoes themself) and just bought new insoles from Target.

TIOSEBON Women's Athletic Shoes Casual Mesh...size 6.5, these are cute, but as I tried wearing them about the inside of the house my feet felt tired and the top part of the shoe along with the back part of the heal rubbed. I needed these shoes for a 2.3 exercise walk, my feet would end up being blistered on a walk like that, so I returned them. If you don't need them for a long exercise walk, they are cute. Don't know how long they would last, I don't think long if used for the purpose I wanted, but for shopping, and doing errands they would be just fine.