Ultraboost reinvented. These running shoes reboot key performance technologies to give you a confident and energy-filled run. The knit upper has a second-skin fit and is built with motion-weave technology for adaptive stretch and support. Dual-density cushioning delivers medial support and an energized ride.Sizing: True to size. Round toe. Lace-up vamp closure. adidas Primeknit 360 upper. Stretchweb outsole flexes naturally for an energized ride, and Continental Rubber gives you superior traction. Dual-density Boost cushioning under arch. Grip sole.