Phiten Compression Open Toe Ti Socks (Short) The perfect pair for those who want to treat their dry heels and support arches & ankles. Open Toe style allows good ventilation and is made with durable thin fabric so that it can be worn comfortably under regular socks. FEATURES Heel support. Supports the dry heels that is seen after bathing or when wearing open shoes. MICRO-TITANIUM SPHERES®. Printed at the arch. AQUA-TITANIUM® and AQUA-SILVER®. Permeated throughout the fabric. Antimicrobial. AQUA-SILVER® is an antimicrobial agent that helps to kill bacteria and odor. Non-slip band. Soft rubber band prevents the sock from sliding down. Especially useful here in Hawaii because you can wear sandals and slippers with this, which we wear all the time here. DETAILS Material: 90% Nylon, 10% Polyurethane Size M (22–24 cm): Women's 4.5–6.5 Size L (25–27 cm): Women's 7.5–9.5, Men's 7–9 Size LL (27–29 cm): Women's 9.5–11.5, Men's 9–11 Other Phiten Compression Socks: Phiten Compression Open Toe TI Socks , Phiten Compression TI Socks Made in Japan