About this item Circular knit upper improves airflow and provides a supportive foothold: FF BLAST technology provides lightweight cushioning and a responsive rebound: Underfoot cutouts provide excellent bounce: OrthoLite X-30 sockliner provides soft step-in comfort: Description The Asics Dynablast are neutral running shoes. These shoes have a knitted upper. This makes the shoes breathable so that the feet do not overheat while running. The upper has been strategically reinforced for a snug and comfortable fit. The midsole is made with FlyteFoam-Blast technology. This innovative foam has been developed for the best energy return. This midsole provides cushioning and responsiveness without weighing your shoes. This ensures long-lasting comfort when walking over long distances. The sole is made of AharPlus rubber. This robust rubber stands for strength and good grip. The sole works together with FlyteFoam material for increased energy return. Questions? Leave a comment below!