Lynco Sports Ortho Posted Neutral Aetrex Compete Orthotics are designed for active lifestyles, injury prevention and help to maintain overall fitness and health daily. This orthotic features our signature Aetrex Arch Support to help biomechanically align your body & help prevent common foot pain such as Plantar Fasciitis, Arch Pain and Metatarsalgia. L420 - Our orthotic for low arches to flat feet with no forefoot pain, featuring a posted heel to control over-pronation and provide balance. DETAILS: Top Cover Material: CopperGuard® antimicrobial lining Center Cushioning Material: Pro-Shox® polyurethane to absorb shock and reduce impact Performance Base: Aerocell™ polyurethane for high energy return Insole Thickness: .2165" Recommended for: Hikers, Walkers and Everyday Activities Best for: Hiking boots, Walking shoes, Everyday shoes, sneakers and boots