Normal socks act like an oven-mit around your feet, causing your toes to rub together and get all hot and sweaty. Subjecting your feet to such a miserable breathing environment could lead to blisters, black toes, and other nightmarish hot spots like this:
If we don't wear mittens on our hands all day long then it's only smart to not wear them on our feet when we're running for extremely long distances. San Diego-based Injinji founders Randuz and Joaquin Romay made it their business to redesign the basic structure and shape of the traditional sock in 1999 with the Injinji endurance tetrasok. You can read about their story here.
These socks combine the comfort and dexterity of bare feet with the protection of a seamless sock, allowing your foot to perform freely and naturally inside your shoes. I received a pair of these bad boys for christmas this year.
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