Asics Performance Run Crew socks, support and comfort mile after mile The Asics Performance Run Crew have been designed specifically for runners looking for comfort and consistent support throughout the entire run. Their anatomical construction and technical materials enhance ventilation, moisture management, and a precise fit with every stride. Material: Technical fabric with polypropylene technology in the heel and toe. Knitting technology: Polypropylene for moisture and heat control, and greater abrasion resistance. Breathability: Mesh fabric that provides advanced ventilation. Fit: Anatomical design specific to the right and left foot and short crew length. Additional details: Dynamic upper with a soft feel and quick drying. Graphic inspired by traditional Japanese illustrations of waves and water.