Running > Socks Brand: 1000 Mile The sock within a sock. A unique double layer system utilises an inner layer that stays with the foot and an outer layer that moves with the shoe. This prevents blisters and wear through reducing the friction which can ruin any long distance athletes day.Constructed from 76% Cotton and 24% Nylon, this sock is suitable for running, gym use or racket sports. £7.99 Add to my Running bag