Seamless socks made especially for kids that require knee and ankle foot orthosis (KAFOs). SmartKnit KAFO 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 KAFOs are exceptionally soft, wick perspiration, anti-microbial and have a heel free design that ensures a perfect fit. KAFOs like they should be - a seamless, comfortable, cool second layer of skin between you and your KAFO.