Darn Tough

Darn Tough's mission is to make the world's best socks, in Vermont, USA, and back them up with their unconditional lifetime guarantee.

Darn Tough's first sock was a running sock. They knew they had to get it on people's feet to make them feel that Darn Tough difference. So in 2004, they knitted 3,500 pairs and gave them away for free to runners participating in the Vermont City Marathon. Legend has it that some people still wear them. With their lifetime guarantee, they promised to replace their socks if they ever broke or lost their durability. And nearly two decades later, they still do.