Under Armour Featherlite Sock - Men's - 2 Pack - $14.95

You spent all that money on those fancy running shoes, then you thought it was a good idea to go running in cotton socks' Of course your feet are pissed off. Under Armour's wicking synthetic material pulls moisture away from your foot to keep it dry and comfortable. The Featherlite Sock only covers your foot where it's absolutely necessary, too, so you don't have ridiculous tan lines all summer. - $14.95