From ASICS, the Women's Gel-Pulse 17 Running Shoes feature: Engineered mesh upper improves breathability Lace up closure FLYTEFOAM® cushioning helps create a lightweight and comfortable feel underfoot Rearfoot GEL® technology improves impact absorption and creates a softer feeling at footstrike AHARPLUS™ heel plug rubber helps improve durability Rubber outsole Approx. 29mm-37mm stack Approx. 8.2 oz. weight Imported.