adidas women's ultraboost 21 running, workout, cross training shoes - New with Tags, Excellent Condition, ships out of box - color: Hazy Green/Hazy Green/Blue Oxide ENERGY WAS JUST ENERGY UNTIL ENERGY MET ULTRABOOST 21. Harmonization of weight, cushioning, and responsiveness. Ultraboost 21. Say hello to incredible energy return. *Sock-like fit *Lace closure *adidas Primeknit+ upper *Textile lining *Supportive heel counter *Boost midsole *Stretchweb outsole with Continental™ Rubber *Primeblue