Pros:
1) SO. SOFT. It really is like walking on clouds. Very comfy. Originally I meant these to be my pool slippers for home or the gym, but I find myself wearing them for running errands as well.
2) Adjustable straps. I don't wear socks with these, so I have both straps on each slipper at the tightest setting. And they fit perfectly :)
3) Colors! I love the multicolor option, it's more fun than plain ol' solid colors.
4) Lightweight. These things are super light, making walking even more comfortable.
Cons:
1) Sizing may be sliiiightly small. My shoe size is typically between women's 8 and 9, or European 38-41 depending on the brand. I ordered the women's 8-9 and it feels a bit more like 8-8.5. If the slippers were even 1 or 2mm smaller, I would have had to size up. Just a warning to anyone closer to a women's size 9. And no, I haven't left them in the sun to shrink.
2) Might not fit wide-footed folk. I have borderline wide feet, and the footbed of the slipper is a bit restrictive. Loosening the straps doesn't help, as that would then make the slipper fall off completely.
3) There's a noticeable squeaky sound on smooth floors. Not a big deal to me, but might be for someone with sensory issues.