The socks are thin and add a nice barrier and absorbency between my foot and shoe without being too bulky. In some of my shoes they do have a tendency to slide down at the heel, so I have to tug them back out of the shoe and sort of fold a bit of fabric over the back of the shoe. Some reviewers have indicated that their toes soon poke through the fabric, but I think maybe they have long or sharp toenails as I haven't had that problem at all. They do shrink after washing and seem to actually fit better. The socks have a tendency to stick to other items in the laundry, and become temporarily lost, so I have started laundering them in a lingerie bag to make sure they all make it intact out of the drier.