An ankle support having a leg portion connected sidewardly and rearwardly to a foot portion by at least one elongate resilient C-shaped member extending vertically on at least one medial or lateral side of an Achilles tendon of a wearer, wherein the at least one C-shaped member opens forwardly around at least one medial or lateral malleoli of the wearer, and wherein the at least one C-shaped member is constructed and arranged to allow natural functional ankle movement in both dorsiflexion and plantar flexion with minimal impedance while controllably inhibiting rolling ankle movement in inversion or eversion.