L1920 - 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: High-tech polyester to wick moisture and reduce frictionCenter Cushioning Material: Pro-Shoxandreg polyurethane for superior shock absorptionShell: Cork blended core for cushioningPerformance Base: PlastazoteInsole Thickness: .25"Recommended for: Hikers, Walkers, and Intermediate ActivtiesBest for: Walking shoes, Sneakers