The adidas Ultra Boost 4.0 is the fourth version of the popular Ultra Boost running sneaker from adidas. It features an updated Primeknit pattern over Boost cushioning. Lean into your stride, keep pushing forward and don't let up until you cross the finish line. These men's neutral running shoes harness the energy-returning power of Boost cushioning to deliver an energised push-off with each footstrike. An adaptive, foot-hugging adidas Primeknit upper combined with targeted support in the midfoot and heel provides a locked-down fit. A grippy outsole grabs the road and other surfaces with superior traction for a smooth ride.