Maximum Cushioning, Full Support for Low Arches. The ProTech Low Arch offers a contoured low arch support to increase stability and reduce pain associated with flat feet. The ProTech Full Length Orthotics are a medical-grade foot support with a firm but flexible support shell, built-in arch support and heel cradle for motion control. Double layer, shock absorbing cushioning for enhanced comfort. A PORON® Cushion heel pad further cushions and protects at the heel.