Truform Men's Dress Knee High Support Sock, 30-40 mmHg, closed toe box, navy nylon-spandex rib-knit fabric, soft non-compressive top, knit-in heel, size Small, 7" - 8.25" (17.8 - 21 cm) ankle circumference, 11" - 14" (27.9 - 35.5 cm) calf circumference, up to 15" (38.1 cm) length to knee.