1000mile The Original Sock Size: Extra Large, Colour: Black

The 1000mile Original Sock is a sock within a sock with an inner layer that stays with the foot while the outer layer moves with the shoe, the lack of friction between the layers then helps to prevent blisters and reduce wear. Available in black and white. double layer - sock within a sock suitable for running, racket sports & training & fitness covered by 1000mile BLISTER FREE GUARANTEE 76% cotton 24% nylon