Run long. Run strong. Run light. The ASICS® Dynaflyte is built to endure even the toughest runs. Predecessor: None. Support Type: Neutral to underpronation. Cushioning: Lightweight, flexible support. Surface: Road. Differential: 8 mm. Lightweight, flexible fabric, textile, and synthetic upper materials. Seamless construction in the forefoot helps eliminate the likelihood of irritation. Lace-up closure. Independently placed eyelets help to evenly distribute lace tension for a better fit and feel. Plush tongue and collar. Soft fabric lining. Removable foam insole. I.G.S.® (Impact Guidance System) employs linked componentry to enhance the foot's natural stride from heel strike through toe-off. Ultralightweight FlyteFoamTM midsole. Heel/Toe: 20 mm/12 mm. ComfortDryTM lasting provides underfoot cushioning, without sacrificing breathability. Product measurements were taken using size 9, width B - Medium.