ASICS LADY GEL-ENDURO 8 Running Shoes Rearfoot Gel - The ASICS GEL system is based on a special kind of silicon that enables optimal shock absorption. Gel units are strategically placed in the midsole and designed to enable specific functions and positions. Trusstic System - A molded component under the mid-foot area. Provides stability and in combination with the contoured midsole helps to control torsional stability. AHAR+ - This is a thinner and lighter version of ASICS High Abrasion Rubber. It is placed on heavy contact areas of the outsole to reduce excessive wear. 3M Reflectivity - A special reflective material which enhances visibility in poor light. 3m Scotchlite is a registered trademark of the 3M Company. Synthetic leather and mesh upper - For a lightweight, comfortable and breathable performance fit.