I've been wearing Darn Tough socks for three years now- almost every day. I have many different versions- crew, boot, micro crew, 1/4 crew. I wear them with clogs for work and with trail runners for hiking. They only thing I don't use them for is sleeping (I get cold feet easily). Not a single pair shows any sign of wear. They get washed with the other clothes on medium to hot temperatures and dried in the dryer. No shrinkage. My only (slight) disappointment is that the medium size is a little too small, and the large is a little too big.  I wear a 9.5-10 4E shoe.