Injinji - Liner + Runner Mini-Crew Women'sSpecifically designed to fit womens feet, this two sock system provides comfort and blister prevention on long runs. The liner is a toesock that moves moisture off your foot, allows toes to splay, and prevents toe on toe friction that can cause blisters. The specially designed outer provides cushioning at the sole and toes, breathability, and built in arch support. Combined, they work together as a unit to keep your feet happier on long runs.