LIGHT AND FAST. The Nike Streakfly is our lightest running shoe. It's all about the speed you need for a 5k or 10k race. With a low profile and sleek details, it seems to merge with your foot to help you perform at your best on your runs. The full-length ZoomX midsole ensures optimal responsiveness at a low weight. The foam layer is thinner than the Vaporfly to reduce weight and make the shoe feel more robust. The result is a shoe that's so light it disappears on your foot while giving you the responsive cushioning of ZoomX foam. So you can hit your fastest pace in the turns and when accelerating in road races. The ultra-thin knit upper is lightweight yet offers the stability you need to compete. Additional reinforcements in the forefoot ensure a secure fit. The new and narrow lacing is set off at the side with a notched tongue and dampens pressure on the top of the foot. Data from runners was used in the development of the outsole. Using this information, traction is placed exactly where you need it most, with a pattern that provides optimal grip on any surface. The result is a stable grip every time your foot makes contact with the ground, so you always have the decisive scoop.