So disappointed. When I got them they were a lightweight nylon. I'd gotten them before and they were a thicker, stretchier material. this nylon runs the first time you wear them they are so lightweight. Also the cost is $18 now and what I ordered was not. I buy this sort of toe sock often and  I would never buy them for $18. Shame on me...I just noticed what I was charged when I was online and saw the cost listed now.  Next time I will make a copy of my order rather than assume everything will be correct. These as I received, are not worth $18.