Answer: Gray/Black liner is the replacement softgood boot liner for the Equalizer boot. Liner does not have a built in air bladder system.
Ossur Equalizer Air Walker comes with a pneumatic air bladder system with cells on both sides of the ankle that can be inflated (blue button up top) to take up any extra space inside for a perfect fit every time. When inflated, the air bladders help push swelling away from your ankle to help speed your recovery. You can also deflate the pneumatic bladders as well. Simply turn the deflation dial (just below the blue button) on the front of the boot to let excess air out for comfort.
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