Updated circular knit upper reduces the amount of layers from the previous model, cutting down on weight while still creating a snug, sock-like fit that moves with the foot. Areas of breathability and support are incorporated into the knit, eliminating all seams for a one-to-one fit. Dynamic Fit technology uses Flywire cables that wrap the midfoot and incorporate with the shoe's laces, allowing you to adjust your level of support and lockdown by tightening or loosening the laces. Minimal sockliner molds to the shape of the foot for added comfort. An injected unit sole of lightweight, yet durable foam doubles as midsole and outsole, drastically cutting down on weight while still delivering protection and low-profile cushioning. Auxetic outsole pattern expands on impact and contracts at toe off, mimicking the movement of your foot for a more natural running stride. Segments of solid rubber under the heel and toe add extra durability in high-wear areas of the outsole.