ADIDAS ULTRABOOST 21 HAS BEEN COMPLETELY REDESIGNED AND OFFERS MORE BOOST THAN ITS PREDECESSOR. THIS PRODUCT IS PRIMEBLUE: MADE FROM A HIGH-PERFORMANCE RECYCLED MATERIAL COMPOSED IN PART OF PARLEY OCEAN PLASTIC. 50% OF THE UPPER MATERIAL IS TEXTILE, 75% OF THE TEXTILE IS MADE FROM PRIMEBLUE YARN. THE ULTRABOOST 21 IS THE IDEAL CHOICE FOR COMFORTABLE ENDURANCE RUNS.