ASICS Women's GEL-1160 100% Synthetic and mesh Rubber sole Shaft measures approximately 2.7" from arch 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 DuoMax Support System enhances support and stability, positioned sport specifically DuraSponge Outsole enhances cushioning and durability in the forefoot