Sixs - Recovery SocksCE approved ""Class 2"" compression socks With its special variable density weave, it compresses the muscle fibers in just the right points to assist blood circulation and therefore oxygenation of the tissues This prevents lactic acid from accumulating in the calf muscles, which delays fatigue and drastically reduces recovery time It can be used before starting the activity to quicken the warm up, during the activity enhance performance, or right