I swap sides, and air them, but launder like everything else as soon as every week. They don't snag on the ground. They don't sag down on my skinny legs. The Journal of Vascular Health noted in 2019 that shoes with unobstructed designs can aid in venous return, that is https://jeffreyhtzgm.wikigiogio.com/1201958/getting_my_copyright_down_the_socks_to_work