Excellent! The best and most stable winter slippers we've ever had as a family. The insole is made of cork inside, the well-known one, and the size is exactly what we wear, there's no need to get a larger size. Of course, prefer the regular fit and not the narrow fit due to the season. Very warm, with durable felt inside and out on the upper part, which softens and molds perfectly to your foot in 2-3 days. It accommodates from thin cotton to thick wool socks. The insole is non-slip and waterproof. They may cost a bit more, but they feel like new, even though I got them at the beginning of the season and I should already be on my second pair of slippers. I chose them because they don't lose their shape and adapt to the foot, unlike others (even more expensive ones!) that I've had over time, which would deform within two months due to my high arch.

Having summer shoes of the same brand, I ignored the comments and bought my size. Luckily, my foot didn't fit easily. The quality of construction is very good, not particularly hard (I expected them to be much harder) and especially comfortable. The foot stays warm. I recommend them

(For the white ones) They are very comfortable, convenient, and most importantly, quiet. Luckily, I read the comments here and got a size smaller than what I usually wear. The 3 stars for one reason only, if you wear them for a whole day, they smell. Unfortunately, they cannot be washed, so they remain unused.

I wear size 46 in all my shoes (except for some English ones where size 45 1/2 fits me better as there is a corresponding size in the English system). In the slipper, size 46 was too big, leaving room at the back, and because the insole has defined points for the arch, toes, etc., it was not very comfortable (it doesn't show in the photo, but the difference in height at various points is very noticeable).
I am waiting to receive size 45 and I will update the review.

In the end, after using them for a while, they were a waste of money for me. I got Crocs, which are much more comfortable, you can wear them in winter (with socks), summer, they can be washed so they won't smell after some time, they are lighter, come in more colors, and my roommates won't confuse them with their own.