MORE SIZE CHOICES – Large sizes (2XL-4XL) for ankle up to 35 cm, calf 40 to 60 cm in circumference, generally we recommend choosing the larger size if you are in doubt between two sizes). Our knee-high compression socks provide comfortable and pleasant support without being too tight and effectively improve blood circulation. WIDE CALF DESIGN – Extra large wide calf size, premium elastic fabric built for durability. Special design for women and men with extra large or large sizes. More comfortable than normal size compression socks, these large and tall calf compression socks provide strong leg support and long-lasting graduated compression, as well as an extremely comfortable use of lightweight and breathable material. QUALITY & COMFORT – Made of durable nylon fabric for comfort and longevity. Our stretchy yet durable fibers make our socks easy to put on and take off. They fit snugly from toe to knee, energizing your skin. Comfortable wide top band prevents rolling, provides 360-degree stretch for greater flexibility and durability. Breathable high-performance fabrics maintain an optimal temperature, wicking moisture away from the skin to ensure you feel fresh and comfortable. COMPRESSION THERAPY INNOVATION – Our compression socks (20-30 mmHg) differ from traditional ones. They have different pressure gradients from bottom to top to ensure an even flow of blood vessels from the distal end to the proximal end. More improved blood circulation means healthier legs and less pain + swelling. Our graduated compression socks support your legs, reduce fatigue, soreness and prevent injuries, cramps, swelling and help with muscle recovery and varicose veins. HIGH PERFORMANCE + YOU CAN WEAR THEM EVERY DAY – Compression socks have been shown to improve performance, help speed up recovery and provide relief from injuries and inflammation. They provide optimal articulation and muscle support. A real necessity for anyone who works long hours standing on their feet, or those who are heavily invested in sports and a fitness lifestyle. It's a great gift for joggers, athletes, fitness fanatics, office workers, parents or grandparents, runners, nurses and doctors.