I love my original AmFibs, had 2 pairs, lost a ton of weight, and ordered the right-sized pair.
The fit was a bit tight, but I literally could not get them over my heel without major gymnastics.
Bring back the zipper!
Sometimes too warm which is a great thing when it comes to my wife. I have the men's and we're both impressed.
Wife loves them. She is always cold except when she wears these. They've done great for running and wearing over bibs.