adidas Performance Hyperfast Running Shoe (Little Kid/Big Kid) 100% Synthetic/Textile Rubber sole Shaft measures approximately Low-Top" from arch Kid specific materials and an engineered mesh forefoot update this fast flexible shoe featuring light and breathable mesh upper with synthetic overlays and a flex groove midsole and lace closure New engineered mesh for a better breathability in the vamp area and a real performance look Light ethylene vinyl acetate midsole with a rubber outsole for more flexibility Non marking outsole Flex groove midsole and lace closure