Since I broke my ankle this year, I can only wear Fitflops whithout aching at the end of the day.  These boots have the same comfort and was winter approaches, are great for a warmer version of the sandals.  They are not lined but a pair of thick socks helps (they are more of a Fall Spring boot).  There are no zippers however, so if you have ankle trouble, you might find the clogs a better choice.  I am pleased with mine and I am able to get them on without any trouble, I just have to be mindful of the bad ankle.  I would, and have recommended anything by Fitflop!