Interestingly, they have a "barcode" system that allow them (and allow us) to know the age of a given sock. "Blacksocks knows the age of all socks" https://www

Interestingly, they have a "barcode" system that allow them (and allow us) to know the age of a given sock. "Blacksocks knows the age of all socks" https://www.blacksocks.com/en/ageofthesocksen https://www.blacksocks.com/en/ageofthesocksen