For its latest trick, adidas has combined two of its biggest innovations, Primeknit and BOOST, to create the adizero Adios Primeknit BOOST. Currently in its testing phase, this latest performance running model is based on the adidas adizero Adios BOOST — currently the world’s fastest marathon shoe — but trades in that shoe’s mesh and synthetic upper for a knit upper made from a single piece of yarn. Below is adidas’s lightweight BOOST sole which offers unparalleled cushioning and a much longer lifespan than traditional cushioning systems. There’s no word yet on a release date for the Primeknit BOOST as it’s still undergoing wear-tests but expect it to reach the market sometime next year looking much the same as it does here.