Repeated muscle vibration is directly related to causing fatigue, muscle damage and shin splints. This provides compression support to the calf to help reduce muscle oscillation for longer stronger performance. A versatile item that allows athletes to use in conjunction with their preferred sock for any sport. It can also be worn under a wetsuit making transition times faster during triathlon. Care instructions - Machine wash in cold water with like colors. Do NOT Tumble dry. Hang to dry in a cool shady area away from sun. Do not use bleach, fabric softeners or dryer sheets. Do not iron.