A properly tightened ATFreg ankle brace virtually eliminates ankle sprains. The patented inner ATFreg strap extends over the Anterior Talofibular Ligament area and spans the cuboid bone and the proximal tip of the 5th metatarsal. As the brace is tightened, the ATFreg strap adds tension and provides superior lateral support. Flexible steel springs act like tendons to reinforce both sides of the ankle. A single layer of fabric over the ankle bone provides a comfortable fit. Bi directional stretch elastic over the Achilles tendon area allows complete plantar and dorsal flexion which provides unrestricted foot movement for jumping, speed, and agility. Made in USA or China. Sizing according to shoe size. Brace fits either foot.