L820 - 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: Ultra soft mesh polyester fabric to maximize airflow and reduce moistureCenter Cushioning Material: FitGuardandtrade to cushion every stride with slow recovery memory foamPerformance Base: AeroCellandtrade polyurethane for high energy returnInsole Thickness: .2165"Recommended for: Gym workouts and Training sessionsBest for: Gym sneakers, Training shoes, Athletic sneakers, Tennis shoes