Custom running sock for the Pitufollow challenge, designed to offer maximum performance and comfort with every stride. It features enhanced support in the ankle and metatarsal area, and a medium compression level that promotes blood circulation and reduces inflammation during long-distance runs. The heel and toe are made of COOLMAX® terry to minimize impact, improve breathability, and prevent blisters. This charitable sock donates all its profits to an NGO ("MI GRANO DE ARENA"), thus supporting a charitable cause while you run towards your goals. FEATURES: * Made 100% in Spain. * Produced in Coolmax® and Nylon. * Breathable mesh optimizing skin thermoregulation. * Wicks moisture to the outside for quick drying. * Exceptionally soft touch.