New Battle XFAST Ankle Support System Men 10 11.5 Women 12 13.5 Black White Khaki Blue Bulletproof Anti Vibration Technology for a FuelCell foam delivers a Bulletproof Anti Vibration Technology for a Sting Free Feel perfect fit Ultra comfortable design is built for speed and does not slide while running Fits ages 10+ greatly reducing the risk of knee and hip injury Optimal performance with all low profile cleats and most mids 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