Enhance your natural gait for an even better, more responsive ride with the lightweight construction, comfortable flexibility, and reliable underfoot support of the ASICS Dynaflyte 4 running shoes! Predecessor: DynaFlyte 3. Support Type: Neutral to underpronation. Cushioning: Lightweight, flexible support. Surface: Road. Differential: 8 mm. Heel/Toe: 20 mm/ 12 mm. Engineered jacquard mesh upper features Adapt Mesh Technology that provides support and flexibility for a secure and unrestricted fit. Traditional lace-up closure with discrete eyelets that are independently placed to disburse lace tension, creating a customized fitting environment and enhanced upper comfort. Plush tongue and collar. Soft fabric lining. Removable sockliner can be removed to accommodate a medical orthotic. Premium Ortholite X-40 Sockliner features higher rebound properties while providing excellent moisture management and a high-level of breathability. Rearfoot GEL technology cushioning system attenuates shock during impact phase and allows for a smooth transition to midstance. I.G.S. (Impact Guidance System) employs linked componentry to enhance the foots natural stride from heel strike through toe-off. Guidance Line midsole technology features vertical flex grooves decouples the tooling along the lines of progression for enhanced gait efficiency. SpevaFoam 45 lasting employs 45-degree full-length lasting material for a soft platform feel and improved comfort. Ultralightweight FlyteFoam Lyte full-length midsole features organic super fibers that provide superior bounce back and responsiveness. AHAR outsole provides exceptional durability. Imported. Measurements: Weight: 8 oz Product measurements were taken using size 9, width B - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.