Patented inner straps extend over the Anterior Talofibular Ligament for superior lateral support. Comfort Windows—a single layer of fabric over ankle bones provides a more comfortable fit. Bi-directional stretch elastic over the Achilles tendon allows complete plantar and dorsal flexion. Flexible steel springs help support both sides of ankle. High strength 1000 denier polyester material eliminates the need for metal eyelets. Brace allows for unrestricted foot movement for jumping, speed, and agility. Fits either left or right.