With their light cushioning for immediate power transfer and direct feedback, the "RU5 Invisible" short running socks are particularly suitable for competitors. Additional silicone threads on the inside prevent the running sock from slipping. A flap to cushion the heel prevents friction and blisters. Open-pored knitted mesh zones in the instep area ensure pleasant cooling. Fast moisture transport and the optimum fit ensure successful competitions. Moisture-regulating: Unique, dry feeling on the skin thanks to high moisture absorption. Direct shoe contact: Shoe contact and easy entry into the shoe. Fast drying: Quick-drying material. Cooling effect: Ensures an optimum feel-good climate. RU5: Extra-light cushioning for speed training and competition.