New Balance Women's 990 running shoes feature a pigskin and mesh upper that provides your foot with a lightweight and supportive feel. Reflective detailing enhances your visibility. Dual Density Collar uses both a softer density foam against the foot for cushioning, and a firmer density foam for support. ENCAP® midsole technology provides support and maximum durability. ABZORB® cushioning in the midfoot provides exceptional shock absorption. Blown rubber forefoot for lightweight cushioning. N-Durance® rubber compound for maximum outsole durability.