ASICS Women's Gel-Kahana 8 Trail Runner 100% Textile and Synthetic Imported Rubber sole Shaft measures approximately Low-Top" from arch Rearfoot GEL Cushioning System: Attenuates shock during impact phase and allows for a smooth transition to midstance. SpEVA Midsole Material: Improves bounce back characteristics and decreases midsole breakdown. DuoMax Support System: A dual density midsole system positioned to enhance support and stability, positioned sport specifically. Trusstic System Technology: Reduces the weight of the sole unit while retaining the structural integrity of the shoe. Trail Specific Outsole: Reversed lugs provide uphill and downhill traction on all types of terrain.