ASICS LADY GEL-NOOSA TRI 8 Running Shoes I.G.S - ASICS Design Philosophy employs linked components that enhances the foot's natural gait from heel strike to toe-off for improved running efficiency and an improved ride underfoot. Solyte Midsole Material - Proprietary cushioning material that provides an exceptionally lightweight midsole with excellent bounce-back and durability. Trusstic System - Reduces the weight of the sole unit while retaining the structural integrity of the shoe. Dynamic DuoMax - A multi-rigid shape to help with over-pronation which consists of two different density midsole materials and is designed to provide smooth overpronation control. ComforDry Sockliner - This insole provides the optimum cushioning performance system that creates cooler, drier and a healthier shoe environment.