Battle XFAST Ankle Support System Only bracing system that delivers maximum protection without sacrificing performance Ultra-lightweight, over-the-cleat design eliminates the discomfort associated with traditional internal bracing Allows for a full active range of motion and engages its protective component only when ankle enters danger zone Unlike traditional braces, the XFAST ELIMINATES torque transfer to the knee and hip, greatly reducing the risk of knee and hip injury Optimal performance with all low-profile cleats and most mids