Consists of spandex yarns with four ways elastic features. It is lighter in weight with more of a lock design. Provides manageable pressure without making an impression on the skin. The Achilles tendon connects the calf muscles to the heel bone. This may cause greasy foot, inconsistency, fatigue, and exercise. It is characterized by pain, muscle swelling, fatigue, and improper exercise. The four stretch feature provides comfort and controlled pressure for the legs. Helps pressure varicose veins. The Flamingo Premium Deluxe Daffle Socks give you great comfort.