Louis Garneau Sock Size Chart The Tuscan socks are ultra moisture wicking. Ultra thin, the lack of bulk minimizes loss of power transfer caused by friction between your feet and shoes. Mesh at upper and under the foot perfectly aligns with ventilation channels in Louis Garneau shoes for increased airflow.The extra long cuff is designed to increase comfort and blood flow by eliminating pressure points caused by regular cuff designs. Features: - Yarns: Meryl(R) SkinLife yarn: Antimicrobial, moisture-wicking. Keeps your feet dry and comfortable - Yarns' Properties: Moisture wicking and management - High stretchability - Odor resistant and antimicrobial - Socks Construction: Anatomic arch support: Optimal fit - Durable, reinforced heel and toes - High-flex cuff: Fit and comfort - Cuff Height: LG X-Long: 8"/20 cm - Socks Features: Our fastest sock: Aero-tested by Alphamantis - Moisture transfer: High