6.75 - 8.25 in. With Power Stretch-RX technology. Releases sweat. Designed to maximize support. Uses high performance materials. Keeps muscles and joint warm & limber. Futuro offers a wide range of quality products to support your active life. Futuro Sport products are designed to meet your performance needs during sports and other physical activities. Designed to help prevent re-injury. Polartec Power Stretch-RX material is sturdy, soft, non-irritating and keep skin dry. Comfort: Lightweight, soft fabric pulls moisture away from skin. Support: Strong, durable materials help provide stability. Fit: Contoured design helps maximize support and comfort. Power Stretch-RX support that breaths! Innovative materials release sweat. Allows water vapor to pass through. Is eleven times more breathable than neoprene. Has a brushed inner lining for softness and comfort next to skin. This Ankle Support is carefully designed to provide comfort and fit to support your active life.