Powered by responsive technology, the adidas UltraBoost 4.0 is a neutral running sneaker suited for activity in any environment. This women's variant—updated in May 2018—promotes airflow in Noble Maroon Primeknit with a contrast Three-Stripes lace cage guiding the foot. A molded Fitcounter heel helps improve stability. The energetic Boost midsole and dual-density rubber outsole are braced by a Torsion System for midfoot integrity.