Phiten Compression Open Toe Ti Socks Phiten's Compression Open Toe Ti Socks Long uses graduated compression design to help you prevent swelling and discomfort from staying on your feet for too long. FEATURES Because of the open toe design, it allows good ventilation and doesn't get smelly even if worn under regular socks. Graduated compression is developed with higher compression fabric at the ankle and lower compression fabric on the upper calf, to gradually diminish in pressure going upwards. Uniquely Knitted Structural Fabric. A less stretchable, mesh fabric is used to enhance support on targeted muscles and other areas while also providing superior ventilation. AQUA-TITANIUM® and AQUA-SILVER®. The fabric is permeated with both technologies. AQUA-SILVER® has an antimicrobial property that helps to kill bacteria and odor. Stay-up top band. Prevents the sock from sliding down. Moisture-wicking fabric. Combined with the open toe design to keep moisture out. DETAILS Size (shoe size): M (22–24 cm) = Women 4.5–6.5 / L (24–26 cm) = Women 6.5–8.5, Men 6–8 / LL (25–27 cm) = Women 7.5–9.5, Men 7–9 Compression: Lower compression upper calf: 16 hPa / Higher compression ankle: 30 hPa (1 hPa = 100 Pa) Material: 90% Nylon, 10% Polyurethane Other Phiten Compression Socks: Phiten Compression TI Socks Open Toe (Short) / Phiten Compression TI Socks Made in Japan