adidas adizero Boston 8 Women's Running Shoes Glow Blue/Gold Metallic/Real Blue : The adidas AdiZero Boston 8 provides runners with a reliable race-day shoe that was made for long distances. The ultra-responsive Boost technology continues to provide the absolute best in cushioning and feedback that runners have known and loved for years. A stability rail adds lightweight guidance that runners will appreciate but won't interfere with their performance. Upper: An engineered mesh upper offers lightweight and breathable support. Midsole: A stability rail and the midfoot TORSIONA(R) SYSTEM provide stability and propulsion throughout the midfoot phase of the gait cycle. A Boost(TM) midsole provides unmatched energy return and superior cushioning. Outsole: Continental Rubber on the forefoot outsole delivers 21% more traction in dry conditions and 23% more traction in wet conditions. Features a flexible, STRETCHWEB outsole that flexes more naturally.