The A1-S provides a low profile design for mild to moderate ankle sprains. The new A1-S has improved Flywieght-Tech for a lightweight design and enhanced construction. The new L-Strap design with Grip-Tech, anti migration technology stabilizes the ankle and provides increased stability preventing it from rolling inwards (inversion). The designed with Exo-Grid internal technology, the semi-rigid, dual stabilizer inner stays provide lateral and medial ankle stability. Ideal for preventative application and/or for supportive use after mild or moderate ankle sprains. Great option for anyone dealing with a history of ankle sprains and prefer a lower profile brace. This product can easily fit into any running shoe or boot. A preferred option for many runners, hikers, and soccer players. This product is right and left specific.