The CEP Women's Run Recover Compression Combo Pack contains calf sleeves that provide ample support while running and socks that minimize swelling afterwards. The sleeves have a high spandex content, which compresses your muscles for increased performance and reduced fatigue. It also helps to prevent muscle vibration, which can lead to overuse injuries. The socks utilize a blend with slightly less spandex than the sleeves, which makes them less compressive, and more suitable for post workout use. They forces blood out of your feet and towards your heart, to reduce swelling, helping you to recover faster. Both the sleeves and the socks features silver ions imbedded in the fabric to reduce odor.