Aetrex Women's L820W Training Orthotic Arch SupportAetrex Train Orthotics are designed for gym goers wanting comfort and injury prevention during workouts and training sessions. 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. L820 This orthotic is for low arches to flat feet with no forefoot pain, featuring a posted heel to control over pronation and provide balance.