Details:
Guidance Line
Guidance Line places a visible groove in the mid and outsole that  follows the foot's center of pressure from heel to toe. The result is a  more adaptive running platform, creating a smoother transition from heel  strike to toe-off with each stride. The Guidance Line thus helps  runners to maintain a natural, efficient gait, especially over long  distances.
Rearfoot GEL
ASICS GEL is a shock absorption system that uses silicone to satisfy the  needs of amateurs and professional athletes alike. Rearfoot GEL offers  omni-directional shock absorption, it not only absorbs harmful shock, but helps to stabilize impact forces on the heel.
AHAR (Asics High Abrasion Resistance Rubber)
Tough and durable compound, designed to ensure excellent grip and traction, while offering long-lasting durability