Lynco Sports Ortho Cupped 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. L400 - Our neutral orthotic option, great for an average arch type or if you are unsure which customized orthotic to try, featuring a cupped heel to cushion and stabilize the back of foot. 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