85% Nylon, 15% Spandex WIDE CALF DESIGN- Extra large wide calf size, premium elasticity fabric built for durability. Special design for women and men with exlarge or plus size. More comfortable than normal size compression socks, these big and tall calf compression socks bring you strong leg support and long lasting graduated compression, as well as ultra comfortable wear of lightweight and breathable. MORE SIZE CHOICES- Plus size (2XL-4XL) for ankle up to 15 inches, calf 19 to 26 inches circumference, you can refer to the size chart to choose the suitable size (and in general we suggest you choose the larger size if you are hesitating between two sizes). Our knee-high compression socks have nice and snuggly support without being too tight and enhance blood circulation effectively. QUALITY & COMFORT- Constructed from durable nylon fabric for comfort and longevity. Our stretchy yet tough fibers make our socks easy to put on and take off. They fit closely from your toe to knee, energize your skin. Comfortable wide top band prevents rolling, delivers 360-degree stretch for greater flexibility and durability. Breathable high performance fabrics keep an optimal temperature, wick moisture away from your skin to ensure you feel fresh and comfortable. COMPRESSION THERAPY INNOVATION- Our compression socks (20-30 mmHg) are different from traditional ones. They have different pressure gradients from bottom to top to ensure smooth flow of blood vessels from the distal end to the proximal end. More improve blood circulation means more healthier legs and less pain+swelling. Our Graduated Compression Stockings support your legs, reduce fatigue, soreness, and prevent injuries, cramping, swelling and help in muscle recovery and varicose veins. HIGH PERFORMANCE + YOU CAN WEAR IT EVERYDAY- Compression socks have been proven to enhance performance, help speed recovery, and provide relief from injury and inflammation. They provide optimal articulation and muscle support. A veritable necessity for anyone working long-hours standing on their feet, or those heavily invested in athletics and a fitness lifestyle. It is great gift to joggers, athletes, workout fanatics, office workers, parents or grandparents, runners, nurses and doctors.