The new Streak II has been completely overhauled this season to be even faster, lighter and more performance oriented than ever. With a new lower profile midsole and lightweight upper, the Streak II is light enough for a 5K, but cushioned enough for a marathon. This is your new go to PR shoe. 1:1 Seamless Upper creates an unparalleled fit with a seam free interior. 1:1 360 Lacing anatomically conforms to the foot for a tailored fit regardless of foot shape. NEW 1:1 Energy Foam cushions the forefoot upon impact and then returns energy back to the runner.