Injinji Run Lightweight MC Xtralife Gray The Run Lightweight Mini-Crew from Injinji maximizes wearing comfort and minimizes the size. build up of moisture and friction. This ultra thin. minimalistic toe socks give your toes the opportunity to move in a natural way. which ensures optimum wearing comfort. The lightweight and breathable mesh on the top keeps your feet cool and optimally ventilated. Because of the mini-crew length the sock comes just above the ankle. making the heel completely covered and protected. Details Material: 68% Nylon, 27% Coolmax, 5% lycra CoolMax fabric is a specially designed polyester to not only provide good moisture management, but also to improve comfort.