【High-Rebound Material】 These socks use high-rebound material to reduce foot fatigue and provide a comfortable fit. 【Arch Support Function】 Equipped with an arch support function to improve foot stability and support performance during running. 【Made in Japan】 Made in Japan, guaranteeing quality and providing peace of mind. - Brand: Colantotte SPORTS - Product Name: Pro-Aid Socks for Run - Size: M 24-26cm - Material: Polyester, Nylon - Functions: Arch support function, comfortable fit - Features: Uses low-rebound and high-rebound materials Blue Thank you for viewing.