The adidas Ultra Boost 4.0 Grey is designed to blend comfort, style, and functionality into the form of a women’s running shoe. The upper features a PrimeKnit construction for a snug and adaptive fit. The brand’s renowned Boost technology in the midsole delivers responsive cushioning. Additional features include a durable Continental Rubber outsole for traction, a standard lacing system, and a TPU heel counter for enhanced stability. The iconic 3-Stripes pattern adorns the sides, while embossed branding on the lateral heel nods to the heritage of the Boost line. A standout feature is the solid gray colorway that gives the shoe its sleek and modern aesthetic. Originally retailing for $180 when released on November 28th, 2017.