New Balance 990 - Girls' Grade School The New Balance 990 running shoe will provide the perfect blend of cushioning and stability for the most serious runners. Lightweight, supportive pigskin/synthetic/mesh upper adds a nice level of breathability and comfort. Reflective detail offers a level of visibility while on the roads. Dual-density collar foam uses both a softer density foam against the foot for cushioning, and a firmer density foam for support. ENCAP® EVA midsole delivers more support and durability. ABZORB® provides cushioning and energy displacement. NDurance® rubber gives maximum durability in high-wear areas. Removable insole. Blown rubber forefoot.