Concerning toughness, they may have a great life span warranty, just exchanged two pairs in a store where by They're carried with no concerns. They had each worn off the outer layer of cloth over the elastic Main and were changed without dilemma. My favorite each day and hiking socks. https://andyzqgyq.dgbloggers.com/32891366/the-definitive-guide-to-open-toe-support-socks