Designed to provide strong support for moderate to severe right ankle sprains, the Zamst Adults' A2-DX Ankle Brace features a dual-exterior, molded Exo-Grid support structure with Grip-Tech antimigration technology, which stabilizes the ankle to help prevent it from rolling inward and outward. An anchor strap helps reduce the separation of lower leg bones to protect against high ankle sprains, while i-Fit technology enables individualized adjustability and compression. Made of polyethylene, nylon, polyester, polystyrene, polyurethane, brass and polyacetal for flexibility and strength.