ASICS Women's GEL-Fitwalk Lyte Walking Shoe 100% Synthetic and mesh Rubber sole Platform measures approximately 1 Rearfoot GEL Cushioning System: Attenuates shock during impact phase and allows for a smooth transition to midstance Trusstic System: Reduces the weight of the sole unit while retaining the structural integrity of the shoe SpEVA Midsole Material: Improves bounce back characteristics and decreases midsole breakdown Removable Sockliner accommodates medical orthotics