Seamless socks for those that require ankle foot orthosis (AFOs). SmartKnit AFO socks are made the same way a caterpillar spins its cocoon – starting at the toe and circling to the top. No more rubbing from uncomfortable seams! SmartKnit AFOs are exceptionally soft, wick perspiration, anti-microbial and have a heel free design that ensures a perfect fit. AFOs like they should be – a seamless, comfortable, cool second layer of skin between you and your AFO.