Proper blood flow is obviously a huge part of success in any endurance sport. This is especially true for cycling and triathlon. The Assos Recovery Socks feature medical grade compression, helping to promote circulation during exercise and recovery. Their compressive pressure gradually decreases as the sock moves up the leg to help keep the blood moving from the extremities to the heart. The smooth and elastic InfaRed Yarn used on these socks is classified as second class medical compression. With no seams used on the foot wrap, ankle, or calf, you can count on friction free comfort through athletic activity. The Assos Recovery Socks are another piece in high-level performance.