Enjoy relief from leg fatigue, swelling, and varicose veins with Evolyline's 3 pairs of black XXL medical compression socks. These knee-high socks offer a 20-30 mmHg compression gradient to improve blood circulation, reduce ankle swelling, and provide support during long periods of standing, sitting, or travel. Made from a breathable blend of nylon and spandex, they are comfortable for all-day wear. Ideal for runners, nurses, teachers, office workers, and seniors. Hand wash only. Choose your size based on ankle and calf measurements.