Design: Engineered jacquard mesh upper creates a softer feel against the foot while improving breathability GUIDANCE LINE(TM) technology provides a more consistent stride Designed for leisure running In-Shoe Comfort: Rearfoot GEL(TM) technology improves impact absorption and creates a softer feeling at footstrike AMPLIFOAM(TM) cushioning improves durability and creates a more flexible feel at footstrike OrthoLite(TM) X-55 sockliner improves step-in comfort