adidas ZX 5000 University of Miami The U FZ4416 Release Info adidas are a street-worthy update for your everyday collection - infused with the performance power of running shoes. This all-black pair feature uppers made from Primeknit — a repurposed material made from BF2 plastic — and are supported with synthetic three stripe caging. Underfoot, responsive boost™ cushioning provides unrivalled comfort and to sign off, a flash of red can be seen on the rubber outsole.