The IFAST® dynamic ankle stabilizer was developed with the body in mind, moving the way athletes move and protecting the way the body protects. It fits easily inside any shoe. Incorporated into the IFAST is a synthetic ligament. Using specially selected materials, the tension system behaves like the ligaments in the body; an adjustable tension cord allows for a customizable level of support. An upper and lower cuff secures the device to the ankle. By using a material slightly sturdier than the tension system, these cuffs act like the bone and keep all motion and protection focused on the ankle joint. The compression sleeve acts as the skin, surrounding the ankle joint, keeping it warm and mobile. This creates precise and total custom ankle protection, allowing performance at the highest levels, only intervening before athletes move past the end range of motion.