Powerstep Slimtech 3/4 Length Orthotic Insert Athletic Insoles Powerstep's original orthotic insert in a 3/4 length. A bi-layer design with a firm ye flexible support shell, built-in arch support and heel cradle for increased stability. Product Details Benefits Include: Friction reducing, anti-microbial top fabric Low, flat heel cradle to stabilize and protect the heel during landing3/4 length with thin tapered edge Specifications: Materials: Polypropylene/Polyester Style: 5012-03A