They seem to be of good quality, of course, time will tell. If they break quickly, I will come back. They are lightweight and comfortable. The size is accurate.

Their mold is "tight" but the foot fits inside without "swimming", although for me it is just right because I have wide feet.
They don't make noise when walking, they are comfortable to walk in, and the foot doesn't slide inside.
I have them for a short time so I don't have an opinion on durability over time, but know that they are not flat with the foot "floating" inside like some supermarket ones.