The A1 incorporates a-fit technology for an anatomically (left and right) correct fit and i-Fit technology for individualized adjustments and compressions. The Exo-Grid (Internal) has dual internal stabilizers, which provide lateral & medial ankle stability. L-Strap and Y-Strap Stabilizers with Grip Tech (antimigration) located on the outside prevents the ankle from rolling inwards (Inversion) by adjusting the tension of the straps.