Consists of spandex yarn with four ways stretch advantages. It is lighter in weight with over -lock design. Provides controlled compression without leaving impression on the skin. The Achilles tendon connects calf muscle to heel bone. It may cause due to probated foot, improper foot wear, fatigue and exercise. It is characterized by pain, muscle swelling, fatigue and improper exercise. Flamingo Premium Calf Support gives you a great relief. Four ways stretch advantage provides comfort, support and controlled compression without leaving impression on skin.