I have two identical pairs of socks, bought possibly a year in between. Whilst pulling on one sock, the top of the rear heel rise tore apart making it unwearable. Not sure whether it was the recently purchased pair, or ones bought a year or so ago, but was very disappointed considering the cost.
These are the best socks I have used. I use them for work and bushwalking. The best thing about doing business with Socks for Living was they were so helpful in assisting me with my order. Will purchase from this business again.