Engineered woven upper: A lightweight, breathable woven material helps reduce the need for additional overlays. Tongue wing construction: A tongue feature that provides a comfortable and secure feel around the midfoot while reducing tongue movement. FF TURBO SQUARED trampoline pod: A forefoot midsole construction that helps amplify the bounce experience. FF BLAST MAX cushioning: One of our most energetic midsole foams that's complemented with cloud-like softness and a responsive energy return in each step. ASICSGRIP outsole rubber: ASICS proprietary outsole that provides advanced grip on a variety of terrain.