Product Description                     Guards to stabilize inversion and eversion movements     Focusing on the difference between the positions of the ankles on both sides, an original guard is designed to match the skeleton. Firmly stabilize the movements of both inversion (rolling inward) and eversion (rolling outward).                            Thin and breathable material     This product is made of a thin and low-profile material with excellent breathability and anti-bacterial deodorant properties.                            Increase support level with two straps     Connected plantar strap with X (cross) strap. It increases support level by pulling upward from the heel by applying the taping function (stirrup). The plantar strap also has an anti-slip function.                            Stability for unstable movements on lateral and anterior sides     X (cross) straps using the taping function (figure-eight) prevents the ankle from unstable lateral and anterior movements.                                How to select proper size of the A2-DX          Choose a size based on your shoe size. If your measurement falls between two sizes, choose the larger one. Specify left or right.                      Size for JP/Asia model      Shoe size                    S      19.0 - 22.0 cm              M      22.0 - 25.0 cm              L      25.0 - 28.0 cm              LL      28.0 - 31.0 cm                         Size for US model      Shoe size (Men)      Shoe size (Women)                    S      5 - 7.5      6 - 8.5              M      8 - 10.5      9 - 11.5              L      11 - 13.5      12 - 14.5              XL      14 - 16.5      15 - 17.