Provides compression and moderate stability to ankle. Medical Application Mild to moderate ankle sprains and/or inversions. How it Works" Compression contains inflammation and promotes circulation while providing support to ankle area. Stabilizes medial (inside) and lateral (outside) ankle area. Design Theory Breathable, soft fabric offers 4 way stretch applying even compression throughout brace. Two oval gels around inside and outside ankle bone provide excellent comfort and support to ankle area. Medial (inside) and lateral (outside) spiral stays offer overall additional stability.