The wave-like traction pattern is a series of cascading studs, so it engages more surface area of the Air Zoom unit while also providing the appropriate amount of grip. Pull tabs and a strap combine for a design that eliminates the need for laces and helps get you on the field fast. We've upgraded the stretch mesh from the previous generation to an adaptable knit that offers flexibility, provides support and brings you closer to the ball. A Dynamic Fit collar wraps your ankle in soft, stretchy fabric for a secure feel. The upper is made of NikeSkin with embedded chevrons, which helps provide ball control and truly gives you a feeling of barefoot soccer.