Powerstep® is a unique podiatric support system that helps relieve heel and arch pain, as well as knee and lower back pain. Common insoles don"t provide needed support. Ordinary supports can collapse too easily and don"t stabilize the heel. Powerstep® features a unique 4-component design to relieve foot pain:Prescription-like arch support.Heel cradle and platform for stability.Unique double layer cushion casing.Sanitiz anti-bacterial topsheet.Powerstep® provides affordable, first line therapy that uniquely fills four important roles:1) It"s a starter orthotic, a diagnostic tool to understand if it relieves pain better.2) It"s a temporary orthotic, to wear while waiting for the custom orthotic to be fabricated and fitted.3) It"s a sports orthotic, for people who need cushion and support only for certain activities or sports.4) And it"s an affordable orthotic, for those who aren"t insured or can"t or won"t pay for custom orthotics.Insoles have UNISEX sizing.