Provide Support: several zones of graduated for boost venous flow. They are designed to promote oxygen flow preventing cramping ,fatigue, swelling, and reduces the risk of injury. – Friction & Shock Protection: seamless toe design, these compression socks for circulation have targeted cushioning on the footbed for shock absorption, Cushion on the toe and in bottom with thicker yarn, reduces the impact and friction when your move, and increasing the performance and durance.