After all these years it's become very clear that New Balance has perfected the running shoe. New Balance's signature suede overlays the comfortable mesh upper. The Grade School 574 combines retro style with modern day technology, giving you breathable comfort during every run. • ENCAP midsole technology provides support and maximum durability. • EVA (Ethyl Vinyl Acetate) foam midsole for lightweight cushioning. • Rubber outsole.