Women's ADIDASA(R) ULTRA BOOST 20 :: Teaming up with the International Space Station's Microgravity Lab adidas has unlocked the next generation of boost(TM) in your Women's adidas Ultra Boost 20 running shoe. An elevated heel and new iridescent space blue boost(TM) cushioning delivers the energy charge you crave. Lace up precise second skin comfort with Primeknit+ and TFP materials used in aerospace engineering for lightweight strength in your new Ultra Boost 20.