The adidas ULTRABOOST 21 W women's running shoes do their best to achieve perfect harmony of weight, comfort and the power of active energy return. This is a neutral shoe which has an upper made of adidas Primeknit + textile knit with Tailored fibre Placement (TFP) reinforcement which ensures the necessary reinforcement. The Boost active suspension midsole provides the greatest energy return ever created by adidas. The Stretchweb sole is naturally flexible and complemented with Continental rubber which guarantees maximum grip on both wet and dry surfaces.