I'm very pleased with these socks. Even after a few months of wash and wear they have held up. One minor concern- I suffer from a bit of oedema. There is a thin rib of elastic thread around the circumference of the sock inside the top. I've had to clip this elastic in several places on each sock so as to keep the socks from 'digging in." This was easily done and does not seem to have effected the longevity of the socks.  Neither do they fall. Four rather than 5 stars because of the elastic.