ENGINEERED KNIT MESH UPPER A lightweight technical knit material that is designed to create a unique balance of comfort, breathability and fit while reducing the need for additional overlays. New 4D GUIDANCE SYSTEM Innovative new take on stabilizing the foot based on biomechanical research. Focusing on adaptive, on-demand stability. Medical foam unit helps return the arch to the ideal position for the next foot strike. REARFOOT PureGEL Technology Softer, updated version of GEL that maintains all the acclaimed properties that have made GEL famous. 65% softer vs previous visible GEL. SURFACE Road HEEL DROP 10 mm WEIGHT 303g/10.7 oz SUPPORT Neutral UNDERPRONATION IS How Your Foot Contacts The Ground: The outside of the heel hits the ground at an increased angle with minimal pronation, causing shock to the lower leg. Push-Off: You experience pressure on your outer toes. Considered Injuries: Plantar fasciitis, shin splints, ankle strain. Foot Type: High arches. NEUTRAL FOOT TYPE IS How Your Foot Contacts The Ground: Your foot lands on the outside of the heel and then rolls inward, absorbing impact on the body. Push-Off: Your experience even distribution from the front of the foot. Considered Injuries: Getting hurt is less likely due to effective shock absorption, but not impossible. Foot Type: Normal-size arches. OVERPRONATION IS How Your Foot Contacts The Ground: Your foot lands on the outside of the heel and then rolls inward, transferring excess weight. Push-Off: Your experience pressure mainly on your big toe and second toe. Considered Injuries: Shin splints, plantar fasciitis, bunions, heel spurs. Foot Type: Low arches or flat feet.