Great concept, didn't work for me. I can see these being super comfy if they fit properly. Plus they are super cute! The sizing is frankly bizarre. I am a true blue 7.5, and ordered the 8 after reading the reviews. I assumed they'd be a bit too big. They're actually a bit too small, but in a weird way. They're a bit too long so they slip off my heel, but still manage to squeeze the front of my foot in a painful way. I have narrow feet, which is the weird part - these are way too narrow for me in the front. I really wish companies would not do this with their sizing, it excludes a huge number of potential customers who don't fit into whole sizes.