Follow the washing instructions on the socks--REALLY.
Generally, manufacturers suggest that you avoid bleach when washing quality socks. Washing the socks inside-out is a good way to eliminate perspiration-caused bacteria and fluff up the inside terry cushioning—but clean any leaves, twigs and pebbles from the outside first. Using Socklinks to hang dry your socks is a great way to maintain sock shape and comfort and extend useful life. Dryers damage the stretch material used in socks. With proper care and use of Socklinks, your purchases will last years.