Aetrex In-Style Orthotics are designed for providing support in fashion forward shoes that have little or no removable depth. This orthotic features our signature Aetrex Arch Support to help biomechanically align your body &amp help prevent common foot pain such as Plantar Fasciitis, Arch Pain and Metatarsalgia.Detail:Top Cover Material: Genuine LeatherPerformance Base: Thermoplastic urethane for shap retentionInsole Thickness: .0125"Recommended for: ProfessionalsBest for: Dress shoes and shoes with no removable foot bedHow to Use: Begin by removing the foot bed in your shoes, if possible. Replace the insole with your Aetrex Fashion Orthotics. When placing your new Cobra shaped orthotics in your shoes, make sure the arch is placed on the inside of the shoe.